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<h3>
Andreas Klebinger pushed to branch wip/andreask/dom-lt-fixes
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/89a52ee3a9f7a215db71732cc590464b7929851d">89a52ee3</a></strong>
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<span>by Andreas Klebinger</span>
<i>at 2020-08-24T19:52:10+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Change line endings, remove redundant import
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<h4>1 changed file:</h4>
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<a href="#dafe0c717051bfbe491ee2662d7c0e72cf3c0034">
compiler/GHC/CmmToAsm/CFG/Dominators.hs
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<h4>Changes:</h4>
<li id="dafe0c717051bfbe491ee2662d7c0e72cf3c0034">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/89a52ee3a9f7a215db71732cc590464b7929851d#dafe0c717051bfbe491ee2662d7c0e72cf3c0034"><strong>compiler/GHC/CmmToAsm/CFG/Dominators.hs</strong></a>
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<pre style="margin: 0;">-<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes, BangPatterns, FlexibleContexts, Strict #-}</span></span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC3" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- |</span></span>
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<pre style="margin: 0;">-<span id="LC4" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Module : GHC.CmmToAsm.CFG.Dominators</span></span>
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<pre style="margin: 0;">-<span id="LC5" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Copyright : (c) Matt Morrow 2009</span></span>
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<pre style="margin: 0;">-<span id="LC6" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> License : BSD3</span></span>
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<pre style="margin: 0;">-<span id="LC7" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Maintainer : <klebinger.andreas@gmx.at></span></span>
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<pre style="margin: 0;">-<span id="LC8" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Stability : stable</span></span>
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<pre style="margin: 0;">-<span id="LC9" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Portability : portable</span></span>
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<pre style="margin: 0;">-<span id="LC10" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC11" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> The Lengauer-Tarjan graph dominators algorithm.</span></span>
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12
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<pre style="margin: 0;">-<span id="LC12" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC13" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> \[1\] Lengauer, Tarjan,</span></span>
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<pre style="margin: 0;">-<span id="LC14" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /A Fast Algorithm for Finding Dominators in a Flowgraph/, 1979.</span></span>
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<pre style="margin: 0;">-<span id="LC15" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC16" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> \[2\] Muchnick,</span></span>
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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /Advanced Compiler Design and Implementation/, 1997.</span></span>
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<pre style="margin: 0;">-<span id="LC18" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC19" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> \[3\] Brisk, Sarrafzadeh,</span></span>
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<pre style="margin: 0;">-<span id="LC20" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /Interference Graphs for Procedures in Static Single/</span></span>
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<pre style="margin: 0;">-<span id="LC21" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /Information Form are Interval Graphs/, 2007.</span></span>
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<pre style="margin: 0;">-<span id="LC22" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC23" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * Strictness</span></span>
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<pre style="margin: 0;">-<span id="LC24" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC25" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Unless stated otherwise all exposed functions might fully evaluate their input</span></span>
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<pre style="margin: 0;">-<span id="LC26" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> but are not guaranteed to do so.</span></span>
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<pre style="margin: 0;">-<span id="LC27" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"></span></span>
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<pre style="margin: 0;">-<span id="LC28" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;">-<span id="LC29" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC30" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.CmmToAsm.CFG.Dominators</span> <span class="p">(</span></span>
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<pre style="margin: 0;">-<span id="LC31" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Path</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Edge</span></span>
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<pre style="margin: 0;">-<span id="LC32" class="line" lang="haskell"> <span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Rooted</span></span>
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<pre style="margin: 0;">-<span id="LC33" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">idom</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">ipdom</span></span>
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<pre style="margin: 0;">-<span id="LC34" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">domTree</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">pdomTree</span></span>
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<pre style="margin: 0;">-<span id="LC35" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">dom</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">pdom</span></span>
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<pre style="margin: 0;">-<span id="LC36" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">pddfs</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">rpddfs</span></span>
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<pre style="margin: 0;">-<span id="LC37" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">fromAdj</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">fromEdges</span></span>
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<pre style="margin: 0;">-<span id="LC38" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">toAdj</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">toEdges</span></span>
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<pre style="margin: 0;">-<span id="LC39" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">asTree</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">asGraph</span></span>
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<pre style="margin: 0;">-<span id="LC40" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">parents</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">ancestors</span></span>
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<pre style="margin: 0;">-<span id="LC41" class="line" lang="haskell"><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC42" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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<pre style="margin: 0;">-<span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Bifunctor</span></span>
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<pre style="margin: 0;">-<span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Tuple</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">swap</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC46" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Tree</span></span>
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<pre style="margin: 0;">-<span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span></span>
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<pre style="margin: 0;">-<span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.IntMap</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntMap</span><span class="p">)</span></span>
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50
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<pre style="margin: 0;">-<span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.IntSet</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="p">)</span></span>
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51
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<pre style="margin: 0;">-<span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.IntMap.Strict</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IM</span></span>
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<pre style="margin: 0;">-<span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.IntSet</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IS</span></span>
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<pre style="margin: 0;">-<span id="LC53" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>
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<pre style="margin: 0;">-<span id="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad.ST.Strict</span></span>
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<pre style="margin: 0;">-<span id="LC56" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Array.ST</span></span>
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<pre style="margin: 0;">-<span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Array.Base</span></span>
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<pre style="margin: 0;">-<span id="LC59" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">unsafeNewArray_</span></span>
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<pre style="margin: 0;">-<span id="LC60" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">unsafeWrite</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">unsafeRead</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC61" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC62" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC63" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC64" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">-<span id="LC65" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Path</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC66" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Edge</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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67
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<pre style="margin: 0;">-<span id="LC67" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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68
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<pre style="margin: 0;">-<span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC69" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC70" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC71" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC72" class="line" lang="haskell"><span class="cd">-- | /Dominators/.</span></span>
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<pre style="margin: 0;">-<span id="LC73" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@</span></span>
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<pre style="margin: 0;">-<span id="LC74" class="line" lang="haskell"><span class="n" style="color: #333;">dom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Path</span><span class="p">)]</span></span>
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<pre style="margin: 0;">-<span id="LC75" class="line" lang="haskell"><span class="n" style="color: #333;">dom</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">domTree</span></span>
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<pre style="margin: 0;">-<span id="LC76" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC77" class="line" lang="haskell"><span class="cd">-- | /Post-dominators/.</span></span>
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<pre style="margin: 0;">-<span id="LC78" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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<pre style="margin: 0;">-<span id="LC79" class="line" lang="haskell"><span class="n" style="color: #333;">pdom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Path</span><span class="p">)]</span></span>
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<pre style="margin: 0;">-<span id="LC80" class="line" lang="haskell"><span class="n" style="color: #333;">pdom</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">pdomTree</span></span>
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<pre style="margin: 0;">-<span id="LC81" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC82" class="line" lang="haskell"><span class="cd">-- | /Dominator tree/.</span></span>
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<pre style="margin: 0;">-<span id="LC83" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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<pre style="margin: 0;">-<span id="LC84" class="line" lang="haskell"><span class="n" style="color: #333;">domTree</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC85" class="line" lang="haskell"><span class="n" style="color: #333;">domTree</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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86
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<pre style="margin: 0;">-<span id="LC86" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="p">((</span><span class="o" style="font-weight: 600;">/=</span><span class="n" style="color: #333;">r</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fst</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">idom</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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87
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<pre style="margin: 0;">-<span id="LC87" class="line" lang="haskell"> <span class="n" style="color: #333;">tg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromEdges</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">swap</span> <span class="n" style="color: #333;">is</span><span class="p">)</span></span>
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88
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<pre style="margin: 0;">-<span id="LC88" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">asTree</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">tg</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC89" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC90" class="line" lang="haskell"><span class="cd">-- | /Post-dominator tree/.</span></span>
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91
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<pre style="margin: 0;">-<span id="LC91" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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<pre style="margin: 0;">-<span id="LC92" class="line" lang="haskell"><span class="n" style="color: #333;">pdomTree</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC93" class="line" lang="haskell"><span class="n" style="color: #333;">pdomTree</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC94" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="p">((</span><span class="o" style="font-weight: 600;">/=</span><span class="n" style="color: #333;">r</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fst</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">ipdom</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC95" class="line" lang="haskell"> <span class="n" style="color: #333;">tg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromEdges</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">swap</span> <span class="n" style="color: #333;">is</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC96" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">asTree</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">tg</span><span class="p">)</span></span>
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97
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<pre style="margin: 0;">-<span id="LC97" class="line" lang="haskell"></span>
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98
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<pre style="margin: 0;">-<span id="LC98" class="line" lang="haskell"><span class="cd">-- | /Immediate dominators/.</span></span>
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99
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<pre style="margin: 0;">-<span id="LC99" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- /O(|E|*alpha(|E|,|V|))/, where /alpha(m,n)/ is</span></span>
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100
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<pre style="margin: 0;">-<span id="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- \"a functional inverse of Ackermann's function\".</span></span>
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101
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<pre style="margin: 0;">-<span id="LC101" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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102
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<pre style="margin: 0;">-<span id="LC102" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This Complexity bound assumes /O(1)/ indexing. Since we're</span></span>
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103
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<pre style="margin: 0;">-<span id="LC103" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- using @IntMap@, it has an additional /lg |V|/ factor</span></span>
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104
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<pre style="margin: 0;">-<span id="LC104" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- somewhere in there. I'm not sure where.</span></span>
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<pre style="margin: 0;">-<span id="LC105" class="line" lang="haskell"><span class="n" style="color: #333;">idom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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106
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<pre style="margin: 0;">-<span id="LC106" class="line" lang="haskell"><span class="n" style="color: #333;">idom</span> <span class="n" style="color: #333;">rg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">runST</span> <span class="p">(</span><span class="n" style="color: #333;">evalS</span> <span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">initEnv</span> <span class="p">(</span><span class="n" style="color: #333;">pruneReach</span> <span class="n" style="color: #333;">rg</span><span class="p">))</span></span>
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107
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<pre style="margin: 0;">-<span id="LC107" class="line" lang="haskell"></span>
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108
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<pre style="margin: 0;">-<span id="LC108" class="line" lang="haskell"><span class="cd">-- | /Immediate post-dominators/.</span></span>
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109
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<pre style="margin: 0;">-<span id="LC109" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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110
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<pre style="margin: 0;">-<span id="LC110" class="line" lang="haskell"><span class="n" style="color: #333;">ipdom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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111
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<pre style="margin: 0;">-<span id="LC111" class="line" lang="haskell"><span class="n" style="color: #333;">ipdom</span> <span class="n" style="color: #333;">rg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">runST</span> <span class="p">(</span><span class="n" style="color: #333;">evalS</span> <span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">initEnv</span> <span class="p">(</span><span class="n" style="color: #333;">pruneReach</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="n" style="color: #333;">predG</span> <span class="n" style="color: #333;">rg</span><span class="p">)))</span></span>
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112
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<pre style="margin: 0;">-<span id="LC112" class="line" lang="haskell"></span>
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113
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<pre style="margin: 0;">-<span id="LC113" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC114" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC115" class="line" lang="haskell"><span class="cd">-- | /Post-dominated depth-first search/.</span></span>
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<pre style="margin: 0;">-<span id="LC116" class="line" lang="haskell"><span class="n" style="color: #333;">pddfs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC117" class="line" lang="haskell"><span class="n" style="color: #333;">pddfs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">rpddfs</span></span>
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<pre style="margin: 0;">-<span id="LC118" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC119" class="line" lang="haskell"><span class="cd">-- | /Reverse post-dominated depth-first search/.</span></span>
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<pre style="margin: 0;">-<span id="LC120" class="line" lang="haskell"><span class="n" style="color: #333;">rpddfs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC121" class="line" lang="haskell"><span class="n" style="color: #333;">rpddfs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">concat</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">levels</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">pdomTree</span></span>
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<pre style="margin: 0;">-<span id="LC122" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC123" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC124" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC125" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Env</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC126" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">NodeSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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<pre style="margin: 0;">-<span id="LC127" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC128" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Env</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Env</span></span>
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129
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<pre style="margin: 0;">-<span id="LC129" class="line" lang="haskell"> <span class="p">{</span><span class="n" style="color: #333;">succE</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">-<span id="LC130" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">predE</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">-<span id="LC131" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">bucketE</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">-<span id="LC132" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfsE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">-<span id="LC133" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">zeroE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC134" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">rootE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC135" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">labelE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC136" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">parentE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC137" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ancestorE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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138
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<pre style="margin: 0;">-<span id="LC138" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">childE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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139
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<pre style="margin: 0;">-<span id="LC139" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ndfsE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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140
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<pre style="margin: 0;">-<span id="LC140" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfnE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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141
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<pre style="margin: 0;">-<span id="LC141" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sdnoE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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142
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<pre style="margin: 0;">-<span id="LC142" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sizeE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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143
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<pre style="margin: 0;">-<span id="LC143" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">domE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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144
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<pre style="margin: 0;">-<span id="LC144" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">rnE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)}</span></span>
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145
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<pre style="margin: 0;">-<span id="LC145" class="line" lang="haskell"></span>
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146
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<pre style="margin: 0;">-<span id="LC146" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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147
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<pre style="margin: 0;">-<span id="LC147" class="line" lang="haskell"></span>
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148
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<pre style="margin: 0;">-<span id="LC148" class="line" lang="haskell"><span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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149
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<pre style="margin: 0;">-<span id="LC149" class="line" lang="haskell"><span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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150
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<pre style="margin: 0;">-<span id="LC150" class="line" lang="haskell"> <span class="n" style="color: #333;">dfsDom</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">rootM</span></span>
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<td class="diff-line-num old old_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
151
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<pre style="margin: 0;">-<span id="LC151" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">dfsE</span></span>
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152
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<pre style="margin: 0;">-<span id="LC152" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="mi" style="color: #099;">1</span><span class="p">]</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num old old_line" data-linenumber="153" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
153
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<pre style="margin: 0;">-<span id="LC153" class="line" lang="haskell"> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="n" style="color: #333;">i</span></span>
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154
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<pre style="margin: 0;">-<span id="LC154" class="line" lang="haskell"> <span class="n" style="color: #333;">ps</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">predsM</span> <span class="n" style="color: #333;">w</span></span>
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155
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<pre style="margin: 0;">-<span id="LC155" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">ps</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">v</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num old old_line" data-linenumber="156" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
156
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<pre style="margin: 0;">-<span id="LC156" class="line" lang="haskell"> <span class="n" style="color: #333;">sw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">w</span></span>
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<td class="diff-line-num old old_line" data-linenumber="157" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
157
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<pre style="margin: 0;">-<span id="LC157" class="line" lang="haskell"> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">eval</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num old old_line" data-linenumber="158" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
158
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<pre style="margin: 0;">-<span id="LC158" class="line" lang="haskell"> <span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">u</span></span>
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<td class="diff-line-num old old_line" data-linenumber="159" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
159
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<pre style="margin: 0;">-<span id="LC159" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">sw</span><span class="p">)</span></span>
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160
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<pre style="margin: 0;">-<span id="LC160" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sdnoE</span> <span class="n" style="color: #333;">w</span> <span class="n" style="color: #333;">su</span><span class="p">))</span></span>
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<td class="diff-line-num old old_line" data-linenumber="161" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
161
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<pre style="margin: 0;">-<span id="LC161" class="line" lang="haskell"> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">w</span></span>
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<td class="diff-line-num old old_line" data-linenumber="162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
162
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<pre style="margin: 0;">-<span id="LC162" class="line" lang="haskell"> <span class="n" style="color: #333;">modify</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">e</span><span class="p">{</span><span class="n" style="color: #333;">bucketE</span><span class="o" style="font-weight: 600;">=</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">adjust</span></span>
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163
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<pre style="margin: 0;">-<span id="LC163" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">w</span><span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span><span class="p">`)</span></span>
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164
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<pre style="margin: 0;">-<span id="LC164" class="line" lang="haskell"> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="n" style="color: #333;">bucketE</span> <span class="n" style="color: #333;">e</span><span class="p">)})</span></span>
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165
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<pre style="margin: 0;">-<span id="LC165" class="line" lang="haskell"> <span class="n" style="color: #333;">pw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">parentM</span> <span class="n" style="color: #333;">w</span></span>
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<td class="diff-line-num old old_line" data-linenumber="166" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
166
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<pre style="margin: 0;">-<span id="LC166" class="line" lang="haskell"> <span class="n" style="color: #333;">link</span> <span class="n" style="color: #333;">pw</span> <span class="n" style="color: #333;">w</span></span>
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<td class="diff-line-num old old_line" data-linenumber="167" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
167
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<pre style="margin: 0;">-<span id="LC167" class="line" lang="haskell"> <span class="n" style="color: #333;">bps</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bucketM</span> <span class="n" style="color: #333;">pw</span></span>
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<td class="diff-line-num old old_line" data-linenumber="168" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
168
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<pre style="margin: 0;">-<span id="LC168" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">bps</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">v</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num old old_line" data-linenumber="169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
169
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<pre style="margin: 0;">-<span id="LC169" class="line" lang="haskell"> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">eval</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num old old_line" data-linenumber="170" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
170
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<pre style="margin: 0;">-<span id="LC170" class="line" lang="haskell"> <span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">u</span></span>
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<td class="diff-line-num old old_line" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
171
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<pre style="margin: 0;">-<span id="LC171" class="line" lang="haskell"> <span class="n" style="color: #333;">sv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num old old_line" data-linenumber="172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
172
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<pre style="margin: 0;">-<span id="LC172" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">dv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">sv</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num old old_line" data-linenumber="173" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
173
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<pre style="margin: 0;">-<span id="LC173" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">u</span></span>
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<td class="diff-line-num old old_line" data-linenumber="174" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
174
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<pre style="margin: 0;">-<span id="LC174" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pw</span></span>
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<td class="diff-line-num old old_line" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
175
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<pre style="margin: 0;">-<span id="LC175" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">domE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">dv</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC176" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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177
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<pre style="margin: 0;">-<span id="LC177" class="line" lang="haskell"> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="n" style="color: #333;">i</span></span>
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<td class="diff-line-num old old_line" data-linenumber="178" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
178
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<pre style="margin: 0;">-<span id="LC178" class="line" lang="haskell"> <span class="n" style="color: #333;">j</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">w</span></span>
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179
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<pre style="margin: 0;">-<span id="LC179" class="line" lang="haskell"> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="n" style="color: #333;">j</span></span>
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180
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<pre style="margin: 0;">-<span id="LC180" class="line" lang="haskell"> <span class="n" style="color: #333;">dw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">domM</span> <span class="n" style="color: #333;">w</span></span>
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181
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<pre style="margin: 0;">-<span id="LC181" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">dw</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">z</span><span class="p">)</span></span>
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182
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<pre style="margin: 0;">-<span id="LC182" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">ddw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">domM</span> <span class="n" style="color: #333;">dw</span></span>
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183
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<pre style="margin: 0;">-<span id="LC183" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">domE</span> <span class="n" style="color: #333;">w</span> <span class="n" style="color: #333;">ddw</span><span class="p">))</span></span>
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184
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<pre style="margin: 0;">-<span id="LC184" class="line" lang="haskell"> <span class="n" style="color: #333;">fromEnv</span></span>
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185
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<pre style="margin: 0;">-<span id="LC185" class="line" lang="haskell"></span>
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186
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<pre style="margin: 0;">-<span id="LC186" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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187
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<pre style="margin: 0;">-<span id="LC187" class="line" lang="haskell"></span>
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188
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<pre style="margin: 0;">-<span id="LC188" class="line" lang="haskell"><span class="n" style="color: #333;">eval</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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189
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<pre style="margin: 0;">-<span id="LC189" class="line" lang="haskell"><span class="n" style="color: #333;">eval</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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190
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<pre style="margin: 0;">-<span id="LC190" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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<td class="diff-line-num old old_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
191
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<pre style="margin: 0;">-<span id="LC191" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num old old_line" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
192
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<pre style="margin: 0;">-<span id="LC192" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">==</span><span class="n" style="color: #333;">n0</span> <span class="kr" style="font-weight: 600;">of</span></span>
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193
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<pre style="margin: 0;">-<span id="LC193" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">v</span></span>
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194
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<pre style="margin: 0;">-<span id="LC194" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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195
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<pre style="margin: 0;">-<span id="LC195" class="line" lang="haskell"> <span class="n" style="color: #333;">compress</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num old old_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
196
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<pre style="margin: 0;">-<span id="LC196" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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197
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<pre style="margin: 0;">-<span id="LC197" class="line" lang="haskell"> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">-<span id="LC198" class="line" lang="haskell"> <span class="n" style="color: #333;">la</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC199" class="line" lang="haskell"> <span class="n" style="color: #333;">sl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">l</span></span>
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200
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<pre style="margin: 0;">-<span id="LC200" class="line" lang="haskell"> <span class="n" style="color: #333;">sla</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">la</span></span>
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201
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<pre style="margin: 0;">-<span id="LC201" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">sl</span> <span class="o" style="font-weight: 600;"><=</span> <span class="n" style="color: #333;">sla</span> <span class="kr" style="font-weight: 600;">of</span></span>
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202
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<pre style="margin: 0;">-<span id="LC202" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">l</span></span>
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203
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<pre style="margin: 0;">-<span id="LC203" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">la</span></span>
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204
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<pre style="margin: 0;">-<span id="LC204" class="line" lang="haskell"></span>
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205
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<pre style="margin: 0;">-<span id="LC205" class="line" lang="haskell"><span class="n" style="color: #333;">compress</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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206
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<pre style="margin: 0;">-<span id="LC206" class="line" lang="haskell"><span class="n" style="color: #333;">compress</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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207
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<pre style="margin: 0;">-<span id="LC207" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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208
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<pre style="margin: 0;">-<span id="LC208" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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209
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<pre style="margin: 0;">-<span id="LC209" class="line" lang="haskell"> <span class="n" style="color: #333;">aa</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">a</span></span>
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210
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<pre style="margin: 0;">-<span id="LC210" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">aa</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">n0</span><span class="p">)</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">do</span></span>
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211
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<pre style="margin: 0;">-<span id="LC211" class="line" lang="haskell"> <span class="n" style="color: #333;">compress</span> <span class="n" style="color: #333;">a</span></span>
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212
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<pre style="margin: 0;">-<span id="LC212" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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213
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<pre style="margin: 0;">-<span id="LC213" class="line" lang="haskell"> <span class="n" style="color: #333;">aa</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">a</span></span>
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214
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<pre style="margin: 0;">-<span id="LC214" class="line" lang="haskell"> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">v</span></span>
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215
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<pre style="margin: 0;">-<span id="LC215" class="line" lang="haskell"> <span class="n" style="color: #333;">la</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">a</span></span>
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216
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<pre style="margin: 0;">-<span id="LC216" class="line" lang="haskell"> <span class="n" style="color: #333;">sl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">l</span></span>
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217
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<pre style="margin: 0;">-<span id="LC217" class="line" lang="haskell"> <span class="n" style="color: #333;">sla</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">la</span></span>
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218
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<pre style="margin: 0;">-<span id="LC218" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">sla</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">sl</span><span class="p">)</span></span>
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219
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<pre style="margin: 0;">-<span id="LC219" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">labelE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">la</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC220" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">aa</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC221" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC222" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC223" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC224" class="line" lang="haskell"><span class="n" style="color: #333;">link</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC225" class="line" lang="haskell"><span class="n" style="color: #333;">link</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC226" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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<pre style="margin: 0;">-<span id="LC227" class="line" lang="haskell"> <span class="n" style="color: #333;">lw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">w</span></span>
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<pre style="margin: 0;">-<span id="LC228" class="line" lang="haskell"> <span class="n" style="color: #333;">slw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">lw</span></span>
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229
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<pre style="margin: 0;">-<span id="LC229" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC230" class="line" lang="haskell"> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">-<span id="LC231" class="line" lang="haskell"> <span class="n" style="color: #333;">lc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">c</span></span>
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232
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<pre style="margin: 0;">-<span id="LC232" class="line" lang="haskell"> <span class="n" style="color: #333;">slc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">lc</span></span>
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<pre style="margin: 0;">-<span id="LC233" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">slw</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">slc</span> <span class="kr" style="font-weight: 600;">of</span></span>
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234
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<pre style="margin: 0;">-<span id="LC234" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">s</span></span>
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235
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<pre style="margin: 0;">-<span id="LC235" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC236" class="line" lang="haskell"> <span class="n" style="color: #333;">zs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">-<span id="LC237" class="line" lang="haskell"> <span class="n" style="color: #333;">zc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">c</span></span>
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<pre style="margin: 0;">-<span id="LC238" class="line" lang="haskell"> <span class="n" style="color: #333;">cc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">c</span></span>
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<pre style="margin: 0;">-<span id="LC239" class="line" lang="haskell"> <span class="n" style="color: #333;">zcc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">cc</span></span>
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<pre style="margin: 0;">-<span id="LC240" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">2</span><span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">zc</span> <span class="o" style="font-weight: 600;"><=</span> <span class="n" style="color: #333;">zs</span><span class="o" style="font-weight: 600;">+</span><span class="n" style="color: #333;">zcc</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC241" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC242" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">-<span id="LC243" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">childE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">cc</span></span>
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<pre style="margin: 0;">-<span id="LC244" class="line" lang="haskell"> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">-<span id="LC245" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC246" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sizeE</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">zs</span></span>
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247
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<pre style="margin: 0;">-<span id="LC247" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">c</span></span>
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248
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<pre style="margin: 0;">-<span id="LC248" class="line" lang="haskell"> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">c</span></span>
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249
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<pre style="margin: 0;">-<span id="LC249" class="line" lang="haskell"> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">w</span></span>
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250
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<pre style="margin: 0;">-<span id="LC250" class="line" lang="haskell"> <span class="n" style="color: #333;">lw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">w</span></span>
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251
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<pre style="margin: 0;">-<span id="LC251" class="line" lang="haskell"> <span class="n" style="color: #333;">zw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">w</span></span>
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252
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<pre style="margin: 0;">-<span id="LC252" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">labelE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">lw</span></span>
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<td class="diff-line-num old old_line" data-linenumber="253" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
253
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<pre style="margin: 0;">-<span id="LC253" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sizeE</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">+</span><span class="n" style="color: #333;">zw</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">v</span></span>
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254
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<pre style="margin: 0;">-<span id="LC254" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">follow</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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255
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<pre style="margin: 0;">-<span id="LC255" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">n0</span><span class="p">)</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">do</span></span>
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256
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<pre style="margin: 0;">-<span id="LC256" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">v</span></span>
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257
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<pre style="margin: 0;">-<span id="LC257" class="line" lang="haskell"> <span class="n" style="color: #333;">follow</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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258
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<pre style="margin: 0;">-<span id="LC258" class="line" lang="haskell"> <span class="n" style="color: #333;">zv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num old old_line" data-linenumber="259" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
259
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<pre style="margin: 0;">-<span id="LC259" class="line" lang="haskell"> <span class="n" style="color: #333;">follow</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">zv</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">2</span><span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">zw</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num old old_line" data-linenumber="260" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
260
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<pre style="margin: 0;">-<span id="LC260" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">s</span></span>
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<td class="diff-line-num old old_line" data-linenumber="261" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
261
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<pre style="margin: 0;">-<span id="LC261" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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262
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<pre style="margin: 0;">-<span id="LC262" class="line" lang="haskell"> <span class="n" style="color: #333;">cv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">-<span id="LC263" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">childE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">-<span id="LC264" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">cv</span></span>
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<pre style="margin: 0;">-<span id="LC265" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC266" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC267" class="line" lang="haskell"></span>
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268
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<pre style="margin: 0;">-<span id="LC268" class="line" lang="haskell"><span class="n" style="color: #333;">dfsDom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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269
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<pre style="margin: 0;">-<span id="LC269" class="line" lang="haskell"><span class="n" style="color: #333;">dfsDom</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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270
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<pre style="margin: 0;">-<span id="LC270" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">i</span></span>
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271
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<pre style="margin: 0;">-<span id="LC271" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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272
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<pre style="margin: 0;">-<span id="LC272" class="line" lang="haskell"> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rootM</span></span>
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273
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<pre style="margin: 0;">-<span id="LC273" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">parentE</span> <span class="n" style="color: #333;">r</span> <span class="n" style="color: #333;">n0</span></span>
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274
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<pre style="margin: 0;">-<span id="LC274" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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275
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<pre style="margin: 0;">-<span id="LC275" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">nextM</span></span>
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276
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<pre style="margin: 0;">-<span id="LC276" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">dfnE</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">n</span></span>
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277
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<pre style="margin: 0;">-<span id="LC277" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sdnoE</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">n</span></span>
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278
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<pre style="margin: 0;">-<span id="LC278" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ndfsE</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">i</span></span>
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279
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<pre style="margin: 0;">-<span id="LC279" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">labelE</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">i</span></span>
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280
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<pre style="margin: 0;">-<span id="LC280" class="line" lang="haskell"> <span class="n" style="color: #333;">ss</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">succsM</span> <span class="n" style="color: #333;">i</span></span>
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281
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<pre style="margin: 0;">-<span id="LC281" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">ss</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">j</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num old old_line" data-linenumber="282" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
282
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<pre style="margin: 0;">-<span id="LC282" class="line" lang="haskell"> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">j</span></span>
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<td class="diff-line-num old old_line" data-linenumber="283" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
283
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<pre style="margin: 0;">-<span id="LC283" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">s</span><span class="o" style="font-weight: 600;">==</span><span class="mi" style="color: #099;">0</span> <span class="kr" style="font-weight: 600;">of</span></span>
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284
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<pre style="margin: 0;">-<span id="LC284" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span><span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC285" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC286" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">parentE</span> <span class="n" style="color: #333;">j</span> <span class="n" style="color: #333;">i</span></span>
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287
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<pre style="margin: 0;">-<span id="LC287" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">j</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC288" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC289" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC290" class="line" lang="haskell"></span>
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291
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<pre style="margin: 0;">-<span id="LC291" class="line" lang="haskell"><span class="n" style="color: #333;">initEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Env</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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292
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<pre style="margin: 0;">-<span id="LC292" class="line" lang="haskell"><span class="n" style="color: #333;">initEnv</span> <span class="p">(</span><span class="n" style="color: #333;">r0</span><span class="p">,</span><span class="n" style="color: #333;">g0</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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293
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<pre style="margin: 0;">-<span id="LC293" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Graph renumbered to indices from 1 to |V|</span></span>
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294
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<pre style="margin: 0;">-<span id="LC294" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">g</span><span class="p">,</span><span class="n" style="color: #333;">rnmap</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">renum</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">g0</span></span>
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295
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<pre style="margin: 0;">-<span id="LC295" class="line" lang="haskell"> <span class="n" style="color: #333;">pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">predG</span> <span class="n" style="color: #333;">g</span> <span class="c1" style="color: #998; font-style: italic;">-- reverse graph</span></span>
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296
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<pre style="margin: 0;">-<span id="LC296" class="line" lang="haskell"> <span class="n" style="color: #333;">root</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rnmap</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.!</span> <span class="n" style="color: #333;">r0</span> <span class="c1" style="color: #998; font-style: italic;">-- renamed root</span></span>
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297
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<pre style="margin: 0;">-<span id="LC297" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">size</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">-<span id="LC298" class="line" lang="haskell"> <span class="n" style="color: #333;">ns</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC299" class="line" lang="haskell"> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span></span>
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300
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<pre style="margin: 0;">-<span id="LC300" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC301" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">bucket</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span></span>
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<pre style="margin: 0;">-<span id="LC302" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">zip</span> <span class="n" style="color: #333;">ns</span> <span class="p">(</span><span class="n" style="color: #333;">repeat</span> <span class="n" style="color: #333;">mempty</span><span class="p">))</span></span>
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303
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<pre style="margin: 0;">-<span id="LC303" class="line" lang="haskell"></span>
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304
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<pre style="margin: 0;">-<span id="LC304" class="line" lang="haskell"> <span class="n" style="color: #333;">rna</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<td class="diff-line-num old old_line" data-linenumber="305" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
305
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<pre style="margin: 0;">-<span id="LC305" class="line" lang="haskell"> <span class="n" style="color: #333;">writes</span> <span class="n" style="color: #333;">rna</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">swap</span></span>
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<pre style="margin: 0;">-<span id="LC306" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">rnmap</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC307" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC308" class="line" lang="haskell"> <span class="n" style="color: #333;">doms</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC309" class="line" lang="haskell"> <span class="n" style="color: #333;">sdno</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC310" class="line" lang="haskell"> <span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC311" class="line" lang="haskell"> <span class="n" style="color: #333;">parent</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC312" class="line" lang="haskell"> <span class="n" style="color: #333;">ancestor</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC313" class="line" lang="haskell"> <span class="n" style="color: #333;">child</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC314" class="line" lang="haskell"> <span class="n" style="color: #333;">label</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC315" class="line" lang="haskell"> <span class="n" style="color: #333;">ndfs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC316" class="line" lang="haskell"> <span class="n" style="color: #333;">dfn</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC317" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC318" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Initialize all arrays</span></span>
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<pre style="margin: 0;">-<span id="LC319" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">doms</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC320" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">sdno</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC321" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">size</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">1</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC322" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">ancestor</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC323" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">child</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC324" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC325" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">doms</span><span class="o" style="font-weight: 600;">.=</span><span class="n" style="color: #333;">root</span><span class="p">)</span> <span class="n" style="color: #333;">root</span></span>
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<pre style="margin: 0;">-<span id="LC326" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">size</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC327" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">label</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC328" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC329" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Env</span></span>
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<pre style="margin: 0;">-<span id="LC330" class="line" lang="haskell"> <span class="p">{</span><span class="n" style="color: #333;">rnE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rna</span></span>
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<pre style="margin: 0;">-<span id="LC331" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfsE</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC332" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">zeroE</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC333" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">rootE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">root</span></span>
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<pre style="margin: 0;">-<span id="LC334" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">labelE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">label</span></span>
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<pre style="margin: 0;">-<span id="LC335" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">parentE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">parent</span></span>
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<pre style="margin: 0;">-<span id="LC336" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ancestorE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ancestor</span></span>
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<pre style="margin: 0;">-<span id="LC337" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">childE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">child</span></span>
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<pre style="margin: 0;">-<span id="LC338" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ndfsE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ndfs</span></span>
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<pre style="margin: 0;">-<span id="LC339" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfnE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dfn</span></span>
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<pre style="margin: 0;">-<span id="LC340" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sdnoE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sdno</span></span>
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<pre style="margin: 0;">-<span id="LC341" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sizeE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">size</span></span>
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<pre style="margin: 0;">-<span id="LC342" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">succE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">-<span id="LC343" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">predE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span></span>
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<pre style="margin: 0;">-<span id="LC344" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">bucketE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bucket</span></span>
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<pre style="margin: 0;">-<span id="LC345" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">domE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">doms</span><span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC346" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC347" class="line" lang="haskell"><span class="n" style="color: #333;">fromEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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<pre style="margin: 0;">-<span id="LC348" class="line" lang="haskell"><span class="n" style="color: #333;">fromEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC349" class="line" lang="haskell"> <span class="n" style="color: #333;">dom</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">domE</span></span>
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<pre style="margin: 0;">-<span id="LC350" class="line" lang="haskell"> <span class="n" style="color: #333;">rn</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">rnE</span></span>
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<pre style="margin: 0;">-<span id="LC351" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- r <- gets rootE</span></span>
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<pre style="margin: 0;">-<span id="LC352" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span> <span class="p">(</span><span class="n" style="color: #333;">getBounds</span> <span class="n" style="color: #333;">dom</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC353" class="line" lang="haskell"> <span class="n" style="color: #333;">forM</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC354" class="line" lang="haskell"> <span class="n" style="color: #333;">j</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span><span class="p">(</span><span class="n" style="color: #333;">rn</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC355" class="line" lang="haskell"> <span class="n" style="color: #333;">d</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span><span class="p">(</span><span class="n" style="color: #333;">dom</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC356" class="line" lang="haskell"> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span><span class="p">(</span><span class="n" style="color: #333;">rn</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">d</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC357" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">j</span><span class="p">,</span><span class="n" style="color: #333;">k</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC358" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC359" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC360" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC361" class="line" lang="haskell"><span class="n" style="color: #333;">zeroM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC362" class="line" lang="haskell"><span class="n" style="color: #333;">zeroM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">zeroE</span></span>
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<pre style="margin: 0;">-<span id="LC363" class="line" lang="haskell"><span class="n" style="color: #333;">domM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC364" class="line" lang="haskell"><span class="n" style="color: #333;">domM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">domE</span></span>
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<pre style="margin: 0;">-<span id="LC365" class="line" lang="haskell"><span class="n" style="color: #333;">rootM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC366" class="line" lang="haskell"><span class="n" style="color: #333;">rootM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">rootE</span></span>
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<pre style="margin: 0;">-<span id="LC367" class="line" lang="haskell"><span class="n" style="color: #333;">succsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC368" class="line" lang="haskell"><span class="n" style="color: #333;">succsM</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">succE</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC369" class="line" lang="haskell"><span class="n" style="color: #333;">predsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC370" class="line" lang="haskell"><span class="n" style="color: #333;">predsM</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">predE</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC371" class="line" lang="haskell"><span class="n" style="color: #333;">bucketM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC372" class="line" lang="haskell"><span class="n" style="color: #333;">bucketM</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">bucketE</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC373" class="line" lang="haskell"><span class="n" style="color: #333;">sizeM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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374
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<pre style="margin: 0;">-<span id="LC374" class="line" lang="haskell"><span class="n" style="color: #333;">sizeM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">sizeE</span></span>
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<pre style="margin: 0;">-<span id="LC375" class="line" lang="haskell"><span class="n" style="color: #333;">sdnoM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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376
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<pre style="margin: 0;">-<span id="LC376" class="line" lang="haskell"><span class="n" style="color: #333;">sdnoM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">sdnoE</span></span>
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<pre style="margin: 0;">-<span id="LC377" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dfnM :: Node -> Dom s Int</span></span>
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378
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<pre style="margin: 0;">-<span id="LC378" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dfnM = fetch dfnE</span></span>
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379
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<pre style="margin: 0;">-<span id="LC379" class="line" lang="haskell"><span class="n" style="color: #333;">ndfsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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380
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<pre style="margin: 0;">-<span id="LC380" class="line" lang="haskell"><span class="n" style="color: #333;">ndfsM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">ndfsE</span></span>
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381
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<pre style="margin: 0;">-<span id="LC381" class="line" lang="haskell"><span class="n" style="color: #333;">childM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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382
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<pre style="margin: 0;">-<span id="LC382" class="line" lang="haskell"><span class="n" style="color: #333;">childM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">childE</span></span>
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383
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<pre style="margin: 0;">-<span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">ancestorM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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384
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<pre style="margin: 0;">-<span id="LC384" class="line" lang="haskell"><span class="n" style="color: #333;">ancestorM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">ancestorE</span></span>
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385
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<pre style="margin: 0;">-<span id="LC385" class="line" lang="haskell"><span class="n" style="color: #333;">parentM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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386
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<pre style="margin: 0;">-<span id="LC386" class="line" lang="haskell"><span class="n" style="color: #333;">parentM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">parentE</span></span>
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387
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<pre style="margin: 0;">-<span id="LC387" class="line" lang="haskell"><span class="n" style="color: #333;">labelM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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388
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<pre style="margin: 0;">-<span id="LC388" class="line" lang="haskell"><span class="n" style="color: #333;">labelM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">labelE</span></span>
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<td class="diff-line-num old old_line" data-linenumber="389" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
389
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<pre style="margin: 0;">-<span id="LC389" class="line" lang="haskell"><span class="n" style="color: #333;">nextM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">-<span id="LC390" class="line" lang="haskell"><span class="n" style="color: #333;">nextM</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC391" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">dfsE</span></span>
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<pre style="margin: 0;">-<span id="LC392" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">n'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span></span>
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<pre style="margin: 0;">-<span id="LC393" class="line" lang="haskell"> <span class="n" style="color: #333;">modify</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">e</span><span class="p">{</span><span class="n" style="color: #333;">dfsE</span><span class="o" style="font-weight: 600;">=</span><span class="n" style="color: #333;">n'</span><span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC394" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">n'</span></span>
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<pre style="margin: 0;">-<span id="LC395" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC396" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC397" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC398" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">STUArray</span></span>
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<pre style="margin: 0;">-<span id="LC399" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC400" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC401" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">infixl</span> <span class="mi" style="color: #099;">9</span> <span class="o" style="font-weight: 600;">!:</span></span>
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<pre style="margin: 0;">-<span id="LC402" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">infixr</span> <span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">.=</span></span>
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<pre style="margin: 0;">-<span id="LC403" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC404" class="line" lang="haskell"><span class="cd">-- | arr .= x idx => write x to index</span></span>
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<pre style="margin: 0;">-<span id="LC405" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">.=</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC406" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC407" class="line" lang="haskell"><span class="p">(</span><span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">.=</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeWrite</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;">-<span id="LC408" class="line" lang="haskell"></span>
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409
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<pre style="margin: 0;">-<span id="LC409" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">!:</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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410
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<pre style="margin: 0;">-<span id="LC410" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC411" class="line" lang="haskell"><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">!:</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC412" class="line" lang="haskell"> <span class="n" style="color: #333;">o</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">unsafeRead</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">i</span></span>
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<pre style="margin: 0;">-<span id="LC413" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$!</span> <span class="n" style="color: #333;">o</span></span>
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<pre style="margin: 0;">-<span id="LC414" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC415" class="line" lang="haskell"><span class="n" style="color: #333;">new</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC416" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC417" class="line" lang="haskell"><span class="n" style="color: #333;">new</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeNewArray_</span> <span class="p">(</span><span class="mi" style="color: #099;">0</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC418" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC419" class="line" lang="haskell"><span class="n" style="color: #333;">newI</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC420" class="line" lang="haskell"><span class="n" style="color: #333;">newI</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">new</span></span>
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<pre style="margin: 0;">-<span id="LC421" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC422" class="line" lang="haskell"><span class="n" style="color: #333;">writes</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC423" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">,</span><span class="n" style="color: #333;">a</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC424" class="line" lang="haskell"><span class="n" style="color: #333;">writes</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">xs</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">i</span><span class="p">,</span><span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.=</span><span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC425" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC426" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC427" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monoid</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC428" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="p">)</span> <span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">maybe</span> <span class="n" style="color: #333;">mempty</span> <span class="n" style="color: #333;">id</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">g</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC429" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC430" class="line" lang="haskell"><span class="n" style="color: #333;">fromAdj</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">])]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">-<span id="LC431" class="line" lang="haskell"><span class="n" style="color: #333;">fromAdj</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC432" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC433" class="line" lang="haskell"><span class="n" style="color: #333;">fromEdges</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Edge</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">-<span id="LC434" class="line" lang="haskell"><span class="n" style="color: #333;">fromEdges</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">collectI</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span> <span class="n" style="color: #333;">fst</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">singleton</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">snd</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC435" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC436" class="line" lang="haskell"><span class="n" style="color: #333;">toAdj</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">])]</span></span>
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<pre style="margin: 0;">-<span id="LC437" class="line" lang="haskell"><span class="n" style="color: #333;">toAdj</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span></span>
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<pre style="margin: 0;">-<span id="LC438" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC439" class="line" lang="haskell"><span class="n" style="color: #333;">toEdges</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Edge</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC440" class="line" lang="haskell"><span class="n" style="color: #333;">toEdges</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">concatMap</span> <span class="p">(</span><span class="n" style="color: #333;">uncurry</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(,)))</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">toAdj</span></span>
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<pre style="margin: 0;">-<span id="LC441" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC442" class="line" lang="haskell"><span class="n" style="color: #333;">predG</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">-<span id="LC443" class="line" lang="haskell"><span class="n" style="color: #333;">predG</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">unionWith</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="n" style="color: #333;">g0</span></span>
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<pre style="margin: 0;">-<span id="LC444" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">g0</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">const</span> <span class="n" style="color: #333;">mempty</span><span class="p">)</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">-<span id="LC445" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flip</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">foldrWithKey</span> <span class="n" style="color: #333;">mempty</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC446" class="line" lang="haskell"> <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span> <span class="n" style="color: #333;">mappend</span> <span class="n" style="color: #333;">p</span></span>
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<pre style="margin: 0;">-<span id="LC447" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">singleton</span> <span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC448" class="line" lang="haskell"> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC449" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC450" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC451" class="line" lang="haskell"><span class="n" style="color: #333;">pruneReach</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span></span>
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<pre style="margin: 0;">-<span id="LC452" class="line" lang="haskell"><span class="n" style="color: #333;">pruneReach</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">g2</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC453" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reachable</span></span>
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<pre style="margin: 0;">-<span id="LC454" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">maybe</span> <span class="n" style="color: #333;">mempty</span> <span class="n" style="color: #333;">id</span></span>
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<pre style="margin: 0;">-<span id="LC455" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">flip</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">r</span></span>
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<pre style="margin: 0;">-<span id="LC456" class="line" lang="haskell"> <span class="n" style="color: #333;">g2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span></span>
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<pre style="margin: 0;">-<span id="LC457" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">filter</span> <span class="p">(`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">member</span><span class="p">`</span><span class="n" style="color: #333;">is</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC458" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">filter</span> <span class="p">((`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">member</span><span class="p">`</span><span class="n" style="color: #333;">is</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fst</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC459" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">-<span id="LC460" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC461" class="line" lang="haskell"><span class="n" style="color: #333;">tip</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span><span class="p">])</span></span>
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<pre style="margin: 0;">-<span id="LC462" class="line" lang="haskell"><span class="n" style="color: #333;">tip</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">ts</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">ts</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC463" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC464" class="line" lang="haskell"><span class="n" style="color: #333;">parents</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)]</span></span>
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<pre style="margin: 0;">-<span id="LC465" class="line" lang="haskell"><span class="n" style="color: #333;">parents</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">-<span id="LC466" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">concatMap</span> <span class="n" style="color: #333;">parents</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">-<span id="LC467" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="p">(,)</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">rootLabel</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC468" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC469" class="line" lang="haskell"><span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">])]</span></span>
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<pre style="margin: 0;">-<span id="LC470" class="line" lang="haskell"><span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;">-<span id="LC471" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">xs</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC472" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">acc'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">acc</span></span>
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<pre style="margin: 0;">-<span id="LC473" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">acc'</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">concatMap</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc'</span><span class="p">)</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">-<span id="LC474" class="line" lang="haskell"> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="p">(,)</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">rootLabel</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC475" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC476" class="line" lang="haskell"><span class="n" style="color: #333;">asGraph</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span></span>
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<pre style="margin: 0;">-<span id="LC477" class="line" lang="haskell"><span class="n" style="color: #333;">asGraph</span> <span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">t</span> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">fromAdj</span> <span class="n" style="color: #333;">g</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC478" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">ts</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">as</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unzip</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">tip</span><span class="p">)</span> <span class="n" style="color: #333;">ts</span></span>
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<pre style="margin: 0;">-<span id="LC479" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">as</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">concatMap</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">ts</span></span>
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<pre style="margin: 0;">-<span id="LC480" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC481" class="line" lang="haskell"><span class="n" style="color: #333;">asTree</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">-<span id="LC482" class="line" lang="haskell"><span class="n" style="color: #333;">asTree</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">go</span> <span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">)</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC483" class="line" lang="haskell"> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">!</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC484" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">r</span></span>
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<pre style="margin: 0;">-<span id="LC485" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC486" class="line" lang="haskell"><span class="n" style="color: #333;">reachable</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NodeSet</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NodeSet</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC487" class="line" lang="haskell"><span class="n" style="color: #333;">reachable</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">singleton</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC488" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">seen</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC489" class="line" lang="haskell"> <span class="n" style="color: #333;">as</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">difference</span><span class="p">`</span> <span class="n" style="color: #333;">seen</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC490" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">foldl'</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span><span class="p">`</span> <span class="n" style="color: #333;">seen</span><span class="p">)</span> <span class="n" style="color: #333;">as</span></span>
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<pre style="margin: 0;">-<span id="LC491" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC492" class="line" lang="haskell"><span class="n" style="color: #333;">collectI</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">c</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC493" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">c</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">c</span></span>
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<pre style="margin: 0;">-<span id="LC494" class="line" lang="haskell"><span class="n" style="color: #333;">collectI</span> <span class="p">(</span><span class="o" style="font-weight: 600;"><></span><span class="p">)</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">-<span id="LC495" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span> <span class="p">(</span><span class="o" style="font-weight: 600;"><></span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC496" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC497" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="p">)</span> <span class="n" style="color: #333;">mempty</span></span>
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<pre style="margin: 0;">-<span id="LC498" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC499" class="line" lang="haskell"><span class="cd">-- | renum n g: Rename all nodes</span></span>
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<pre style="margin: 0;">-<span id="LC500" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC501" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Gives nodes sequential names starting at n.</span></span>
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<pre style="margin: 0;">-<span id="LC502" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns the new graph and a mapping.</span></span>
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<pre style="margin: 0;">-<span id="LC503" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (renamed, old -> new)</span></span>
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<pre style="margin: 0;">-<span id="LC504" class="line" lang="haskell"><span class="n" style="color: #333;">renum</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC505" class="line" lang="haskell"><span class="n" style="color: #333;">renum</span> <span class="n" style="color: #333;">from</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span><span class="n" style="color: #333;">m</span><span class="p">,</span><span class="n" style="color: #333;">g</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span><span class="p">(</span><span class="n" style="color: #333;">g</span><span class="p">,</span><span class="n" style="color: #333;">m</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC506" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">foldrWithKey</span></span>
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507
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<pre style="margin: 0;">-<span id="LC507" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">ss</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">new</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span></span>
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508
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<pre style="margin: 0;">-<span id="LC508" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">j</span><span class="p">,</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">i</span></span>
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509
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<pre style="margin: 0;">-<span id="LC509" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">n3</span><span class="p">,</span><span class="n" style="color: #333;">env3</span><span class="p">,</span><span class="n" style="color: #333;">ss2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fold</span></span>
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510
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<pre style="margin: 0;">-<span id="LC510" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">new</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span></span>
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511
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<pre style="margin: 0;">-<span id="LC511" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">k</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num old old_line" data-linenumber="512" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
512
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<pre style="margin: 0;">-<span id="LC512" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">,</span><span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span><span class="p">`</span> <span class="n" style="color: #333;">new</span><span class="p">))</span></span>
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513
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<pre style="margin: 0;">-<span id="LC513" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">,</span><span class="n" style="color: #333;">mempty</span><span class="p">)</span> <span class="n" style="color: #333;">ss</span></span>
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<td class="diff-line-num old old_line" data-linenumber="514" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
514
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<pre style="margin: 0;">-<span id="LC514" class="line" lang="haskell"> <span class="n" style="color: #333;">new2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span> <span class="n" style="color: #333;">j</span> <span class="n" style="color: #333;">ss2</span> <span class="n" style="color: #333;">new</span></span>
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515
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<pre style="margin: 0;">-<span id="LC515" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">n3</span><span class="p">,</span><span class="n" style="color: #333;">env3</span><span class="p">,</span><span class="n" style="color: #333;">new2</span><span class="p">))</span> <span class="p">(</span><span class="n" style="color: #333;">from</span><span class="p">,</span><span class="n" style="color: #333;">mempty</span><span class="p">,</span><span class="n" style="color: #333;">mempty</span><span class="p">)</span></span>
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516
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<pre style="margin: 0;">-<span id="LC516" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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517
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<pre style="margin: 0;">-<span id="LC517" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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518
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<pre style="margin: 0;">-<span id="LC518" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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519
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<pre style="margin: 0;">-<span id="LC519" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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520
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<pre style="margin: 0;">-<span id="LC520" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span></span>
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521
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<pre style="margin: 0;">-<span id="LC521" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">env</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num old old_line" data-linenumber="522" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
522
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<pre style="margin: 0;">-<span id="LC522" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">j</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">j</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="n" style="color: #333;">env</span><span class="p">)</span></span>
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<td class="diff-line-num old old_line" data-linenumber="523" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
523
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<pre style="margin: 0;">-<span id="LC523" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">env</span><span class="p">)</span></span>
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524
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<pre style="margin: 0;">-<span id="LC524" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC525" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC526" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC527" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Nothing better than reinvinting the state monad.</span></span>
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<pre style="margin: 0;">-<span id="LC528" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">{</span><span class="n" style="color: #333;">unS</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">o</span><span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">o</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">o</span><span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC529" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Functor</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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530
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<pre style="margin: 0;">-<span id="LC530" class="line" lang="haskell"> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC531" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC532" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pure</span></span>
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<pre style="margin: 0;">-<span id="LC533" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">unS</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">k</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC534" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Applicative</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC535" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC536" class="line" lang="haskell"> <span class="p">(</span><span class="o" style="font-weight: 600;"><*></span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ap</span></span>
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<pre style="margin: 0;">-<span id="LC537" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- get :: S z s s</span></span>
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<pre style="margin: 0;">-<span id="LC538" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- get = S (\k s -> k s s)</span></span>
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<pre style="margin: 0;">-<span id="LC539" class="line" lang="haskell"><span class="n" style="color: #333;">gets</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC540" class="line" lang="haskell"><span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC541" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- set :: s -> S z s ()</span></span>
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<pre style="margin: 0;">-<span id="LC542" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- set s = S (\k _ -> k () s)</span></span>
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<pre style="margin: 0;">-<span id="LC543" class="line" lang="haskell"><span class="n" style="color: #333;">modify</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC544" class="line" lang="haskell"><span class="n" style="color: #333;">modify</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC545" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- runS :: S z s a -> s -> ST z (a, s)</span></span>
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<pre style="margin: 0;">-<span id="LC546" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- runS (S g) = g (\a s -> return (a,s))</span></span>
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<pre style="margin: 0;">-<span id="LC547" class="line" lang="haskell"><span class="n" style="color: #333;">evalS</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC548" class="line" lang="haskell"><span class="n" style="color: #333;">evalS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">g</span> <span class="p">((</span><span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">.</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">const</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC549" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- execS :: S z s a -> s -> ST z s</span></span>
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<pre style="margin: 0;">-<span id="LC550" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- execS (S g) = g ((return .) . flip const)</span></span>
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<pre style="margin: 0;">-<span id="LC551" class="line" lang="haskell"><span class="n" style="color: #333;">st</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC552" class="line" lang="haskell"><span class="n" style="color: #333;">st</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">s</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC553" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">-<span id="LC554" class="line" lang="haskell"> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC555" class="line" lang="haskell"><span class="n" style="color: #333;">store</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">z</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC556" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC557" class="line" lang="haskell"><span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC558" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">f</span></span>
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<pre style="margin: 0;">-<span id="LC559" class="line" lang="haskell"> <span class="n" style="color: #333;">st</span> <span class="p">((</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.=</span><span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC560" class="line" lang="haskell"><span class="n" style="color: #333;">fetch</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">z</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC561" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC562" class="line" lang="haskell"><span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC563" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">f</span></span>
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<pre style="margin: 0;">-<span id="LC564" class="line" lang="haskell"> <span class="n" style="color: #333;">st</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span></pre>
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1
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes, BangPatterns, FlexibleContexts, Strict #-}</span></span>
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2
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"></span>
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3
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- |</span></span>
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4
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Module : GHC.CmmToAsm.CFG.Dominators</span></span>
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5
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Copyright : (c) Matt Morrow 2009</span></span>
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6
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> License : BSD3</span></span>
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7
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Maintainer : <klebinger.andreas@gmx.at></span></span>
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8
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Stability : stable</span></span>
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9
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Portability : portable</span></span>
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10
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> The Lengauer-Tarjan graph dominators algorithm.</span></span>
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12
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>
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13
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> \[1\] Lengauer, Tarjan,</span></span>
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14
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /A Fast Algorithm for Finding Dominators in a Flowgraph/, 1979.</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"></span>
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16
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> \[2\] Muchnick,</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /Advanced Compiler Design and Implementation/, 1997.</span></span>
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18
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> \[3\] Brisk, Sarrafzadeh,</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /Interference Graphs for Procedures in Static Single/</span></span>
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21
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> /Information Form are Interval Graphs/, 2007.</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * Strictness</span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Unless stated otherwise all exposed functions might fully evaluate their input</span></span>
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26
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> but are not guaranteed to do so.</span></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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29
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.CmmToAsm.CFG.Dominators</span> <span class="p">(</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Path</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Edge</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Rooted</span></span>
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33
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">idom</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">ipdom</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">domTree</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">pdomTree</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">dom</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">pdom</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">pddfs</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">rpddfs</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">fromAdj</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">fromEdges</span></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">toAdj</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">toEdges</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">asTree</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">asGraph</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">parents</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">ancestors</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Bifunctor</span></span>
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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Tuple</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">swap</span><span class="p">)</span></span>
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46
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"></span>
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47
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Tree</span></span>
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48
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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.IntMap</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntMap</span><span class="p">)</span></span>
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49
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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.IntSet</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="p">)</span></span>
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50
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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.IntMap.Strict</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IM</span></span>
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51
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<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.IntSet</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IS</span></span>
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52
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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell"></span>
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53
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>
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54
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad.ST.Strict</span></span>
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55
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"></span>
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56
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Array.ST</span></span>
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57
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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Array.Base</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">unsafeNewArray_</span></span>
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59
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"> <span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">unsafeWrite</span><span class="p">,</span><span class="nf" style="color: #900; font-weight: 600;">unsafeRead</span><span class="p">)</span></span>
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60
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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62
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"></span>
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63
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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64
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<pre style="margin: 0;">+<span id="LC64" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Path</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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65
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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Edge</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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66
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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67
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC71" class="line" lang="haskell"><span class="cd">-- | /Dominators/.</span></span>
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<pre style="margin: 0;">+<span id="LC72" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@</span></span>
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"><span class="n" style="color: #333;">dom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Path</span><span class="p">)]</span></span>
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74
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<pre style="margin: 0;">+<span id="LC74" class="line" lang="haskell"><span class="n" style="color: #333;">dom</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">domTree</span></span>
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"><span class="cd">-- | /Post-dominators/.</span></span>
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77
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<pre style="margin: 0;">+<span id="LC77" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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78
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<pre style="margin: 0;">+<span id="LC78" class="line" lang="haskell"><span class="n" style="color: #333;">pdom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Path</span><span class="p">)]</span></span>
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79
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<pre style="margin: 0;">+<span id="LC79" class="line" lang="haskell"><span class="n" style="color: #333;">pdom</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">pdomTree</span></span>
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80
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="haskell"></span>
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81
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<pre style="margin: 0;">+<span id="LC81" class="line" lang="haskell"><span class="cd">-- | /Dominator tree/.</span></span>
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82
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<pre style="margin: 0;">+<span id="LC82" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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83
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<pre style="margin: 0;">+<span id="LC83" class="line" lang="haskell"><span class="n" style="color: #333;">domTree</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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84
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="haskell"><span class="n" style="color: #333;">domTree</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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85
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="p">((</span><span class="o" style="font-weight: 600;">/=</span><span class="n" style="color: #333;">r</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fst</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">idom</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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86
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell"> <span class="n" style="color: #333;">tg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromEdges</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">swap</span> <span class="n" style="color: #333;">is</span><span class="p">)</span></span>
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87
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">asTree</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">tg</span><span class="p">)</span></span>
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88
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<pre style="margin: 0;">+<span id="LC88" class="line" lang="haskell"></span>
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89
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<pre style="margin: 0;">+<span id="LC89" class="line" lang="haskell"><span class="cd">-- | /Post-dominator tree/.</span></span>
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<pre style="margin: 0;">+<span id="LC90" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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<pre style="margin: 0;">+<span id="LC91" class="line" lang="haskell"><span class="n" style="color: #333;">pdomTree</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">+<span id="LC92" class="line" lang="haskell"><span class="n" style="color: #333;">pdomTree</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">+<span id="LC93" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="p">((</span><span class="o" style="font-weight: 600;">/=</span><span class="n" style="color: #333;">r</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fst</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">ipdom</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC94" class="line" lang="haskell"> <span class="n" style="color: #333;">tg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromEdges</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">swap</span> <span class="n" style="color: #333;">is</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">asTree</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">tg</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC96" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC97" class="line" lang="haskell"><span class="cd">-- | /Immediate dominators/.</span></span>
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98
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<pre style="margin: 0;">+<span id="LC98" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- /O(|E|*alpha(|E|,|V|))/, where /alpha(m,n)/ is</span></span>
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99
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<pre style="margin: 0;">+<span id="LC99" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- \"a functional inverse of Ackermann's function\".</span></span>
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<pre style="margin: 0;">+<span id="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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101
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This Complexity bound assumes /O(1)/ indexing. Since we're</span></span>
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102
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<pre style="margin: 0;">+<span id="LC102" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- using @IntMap@, it has an additional /lg |V|/ factor</span></span>
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103
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<pre style="margin: 0;">+<span id="LC103" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- somewhere in there. I'm not sure where.</span></span>
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104
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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell"><span class="n" style="color: #333;">idom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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105
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<pre style="margin: 0;">+<span id="LC105" class="line" lang="haskell"><span class="n" style="color: #333;">idom</span> <span class="n" style="color: #333;">rg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">runST</span> <span class="p">(</span><span class="n" style="color: #333;">evalS</span> <span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">initEnv</span> <span class="p">(</span><span class="n" style="color: #333;">pruneReach</span> <span class="n" style="color: #333;">rg</span><span class="p">))</span></span>
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106
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"></span>
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107
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"><span class="cd">-- | /Immediate post-dominators/.</span></span>
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108
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Complexity as for @idom@.</span></span>
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109
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell"><span class="n" style="color: #333;">ipdom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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110
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<pre style="margin: 0;">+<span id="LC110" class="line" lang="haskell"><span class="n" style="color: #333;">ipdom</span> <span class="n" style="color: #333;">rg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">runST</span> <span class="p">(</span><span class="n" style="color: #333;">evalS</span> <span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">initEnv</span> <span class="p">(</span><span class="n" style="color: #333;">pruneReach</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="n" style="color: #333;">predG</span> <span class="n" style="color: #333;">rg</span><span class="p">)))</span></span>
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<pre style="margin: 0;">+<span id="LC111" class="line" lang="haskell"></span>
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112
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<pre style="margin: 0;">+<span id="LC112" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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113
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<pre style="margin: 0;">+<span id="LC113" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC114" class="line" lang="haskell"><span class="cd">-- | /Post-dominated depth-first search/.</span></span>
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115
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<pre style="margin: 0;">+<span id="LC115" class="line" lang="haskell"><span class="n" style="color: #333;">pddfs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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116
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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"><span class="n" style="color: #333;">pddfs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">rpddfs</span></span>
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117
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<pre style="margin: 0;">+<span id="LC117" class="line" lang="haskell"></span>
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118
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="haskell"><span class="cd">-- | /Reverse post-dominated depth-first search/.</span></span>
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119
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"><span class="n" style="color: #333;">rpddfs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="haskell"><span class="n" style="color: #333;">rpddfs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">concat</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">levels</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">pdomTree</span></span>
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121
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"></span>
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122
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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123
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<pre style="margin: 0;">+<span id="LC123" class="line" lang="haskell"></span>
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124
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<pre style="margin: 0;">+<span id="LC124" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Env</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span></span>
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125
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<pre style="margin: 0;">+<span id="LC125" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">NodeSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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126
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<pre style="margin: 0;">+<span id="LC126" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">a</span></span>
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127
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<pre style="margin: 0;">+<span id="LC127" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Env</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Env</span></span>
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128
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<pre style="margin: 0;">+<span id="LC128" class="line" lang="haskell"> <span class="p">{</span><span class="n" style="color: #333;">succE</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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129
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<pre style="margin: 0;">+<span id="LC129" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">predE</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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130
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<pre style="margin: 0;">+<span id="LC130" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">bucketE</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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131
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<pre style="margin: 0;">+<span id="LC131" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfsE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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132
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<pre style="margin: 0;">+<span id="LC132" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">zeroE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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133
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">rootE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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134
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">labelE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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135
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<pre style="margin: 0;">+<span id="LC135" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">parentE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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136
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<pre style="margin: 0;">+<span id="LC136" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ancestorE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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137
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<pre style="margin: 0;">+<span id="LC137" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">childE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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138
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ndfsE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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139
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<pre style="margin: 0;">+<span id="LC139" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfnE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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140
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<pre style="margin: 0;">+<span id="LC140" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sdnoE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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141
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<pre style="margin: 0;">+<span id="LC141" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sizeE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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142
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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">domE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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143
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<pre style="margin: 0;">+<span id="LC143" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">rnE</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span><span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)}</span></span>
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144
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<pre style="margin: 0;">+<span id="LC144" class="line" lang="haskell"></span>
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145
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<pre style="margin: 0;">+<span id="LC145" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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146
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<pre style="margin: 0;">+<span id="LC146" class="line" lang="haskell"></span>
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147
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<pre style="margin: 0;">+<span id="LC147" class="line" lang="haskell"><span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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148
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<pre style="margin: 0;">+<span id="LC148" class="line" lang="haskell"><span class="n" style="color: #333;">idomM</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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149
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<pre style="margin: 0;">+<span id="LC149" class="line" lang="haskell"> <span class="n" style="color: #333;">dfsDom</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">rootM</span></span>
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150
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<pre style="margin: 0;">+<span id="LC150" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">dfsE</span></span>
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151
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<pre style="margin: 0;">+<span id="LC151" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="mi" style="color: #099;">1</span><span class="p">]</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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152
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<pre style="margin: 0;">+<span id="LC152" class="line" lang="haskell"> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="n" style="color: #333;">i</span></span>
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153
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<pre style="margin: 0;">+<span id="LC153" class="line" lang="haskell"> <span class="n" style="color: #333;">ps</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">predsM</span> <span class="n" style="color: #333;">w</span></span>
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154
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<pre style="margin: 0;">+<span id="LC154" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">ps</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">v</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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155
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<pre style="margin: 0;">+<span id="LC155" class="line" lang="haskell"> <span class="n" style="color: #333;">sw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">w</span></span>
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156
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<pre style="margin: 0;">+<span id="LC156" class="line" lang="haskell"> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">eval</span> <span class="n" style="color: #333;">v</span></span>
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157
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell"> <span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">u</span></span>
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158
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">sw</span><span class="p">)</span></span>
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159
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sdnoE</span> <span class="n" style="color: #333;">w</span> <span class="n" style="color: #333;">su</span><span class="p">))</span></span>
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160
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="haskell"> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">w</span></span>
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161
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell"> <span class="n" style="color: #333;">modify</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">e</span><span class="p">{</span><span class="n" style="color: #333;">bucketE</span><span class="o" style="font-weight: 600;">=</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">adjust</span></span>
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162
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<pre style="margin: 0;">+<span id="LC162" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">w</span><span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span><span class="p">`)</span></span>
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163
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<pre style="margin: 0;">+<span id="LC163" class="line" lang="haskell"> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="n" style="color: #333;">bucketE</span> <span class="n" style="color: #333;">e</span><span class="p">)})</span></span>
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164
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell"> <span class="n" style="color: #333;">pw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">parentM</span> <span class="n" style="color: #333;">w</span></span>
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165
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="haskell"> <span class="n" style="color: #333;">link</span> <span class="n" style="color: #333;">pw</span> <span class="n" style="color: #333;">w</span></span>
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166
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<pre style="margin: 0;">+<span id="LC166" class="line" lang="haskell"> <span class="n" style="color: #333;">bps</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bucketM</span> <span class="n" style="color: #333;">pw</span></span>
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167
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<pre style="margin: 0;">+<span id="LC167" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">bps</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">v</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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168
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<pre style="margin: 0;">+<span id="LC168" class="line" lang="haskell"> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">eval</span> <span class="n" style="color: #333;">v</span></span>
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169
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<pre style="margin: 0;">+<span id="LC169" class="line" lang="haskell"> <span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">u</span></span>
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170
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<pre style="margin: 0;">+<span id="LC170" class="line" lang="haskell"> <span class="n" style="color: #333;">sv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num new new_line" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
171
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<pre style="margin: 0;">+<span id="LC171" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">dv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">su</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">sv</span> <span class="kr" style="font-weight: 600;">of</span></span>
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172
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<pre style="margin: 0;">+<span id="LC172" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">u</span></span>
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173
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<pre style="margin: 0;">+<span id="LC173" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pw</span></span>
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174
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<pre style="margin: 0;">+<span id="LC174" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">domE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">dv</span><span class="p">))</span></span>
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175
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<pre style="margin: 0;">+<span id="LC175" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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176
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<pre style="margin: 0;">+<span id="LC176" class="line" lang="haskell"> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="n" style="color: #333;">i</span></span>
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177
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<pre style="margin: 0;">+<span id="LC177" class="line" lang="haskell"> <span class="n" style="color: #333;">j</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">w</span></span>
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178
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<pre style="margin: 0;">+<span id="LC178" class="line" lang="haskell"> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ndfsM</span> <span class="n" style="color: #333;">j</span></span>
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179
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<pre style="margin: 0;">+<span id="LC179" class="line" lang="haskell"> <span class="n" style="color: #333;">dw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">domM</span> <span class="n" style="color: #333;">w</span></span>
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180
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<pre style="margin: 0;">+<span id="LC180" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">dw</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">z</span><span class="p">)</span></span>
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181
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<pre style="margin: 0;">+<span id="LC181" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">ddw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">domM</span> <span class="n" style="color: #333;">dw</span></span>
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182
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<pre style="margin: 0;">+<span id="LC182" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">domE</span> <span class="n" style="color: #333;">w</span> <span class="n" style="color: #333;">ddw</span><span class="p">))</span></span>
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183
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<pre style="margin: 0;">+<span id="LC183" class="line" lang="haskell"> <span class="n" style="color: #333;">fromEnv</span></span>
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184
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<pre style="margin: 0;">+<span id="LC184" class="line" lang="haskell"></span>
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185
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<pre style="margin: 0;">+<span id="LC185" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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186
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<pre style="margin: 0;">+<span id="LC186" class="line" lang="haskell"></span>
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187
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<pre style="margin: 0;">+<span id="LC187" class="line" lang="haskell"><span class="n" style="color: #333;">eval</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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188
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<pre style="margin: 0;">+<span id="LC188" class="line" lang="haskell"><span class="n" style="color: #333;">eval</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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189
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<pre style="margin: 0;">+<span id="LC189" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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190
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<pre style="margin: 0;">+<span id="LC190" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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191
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<pre style="margin: 0;">+<span id="LC191" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">==</span><span class="n" style="color: #333;">n0</span> <span class="kr" style="font-weight: 600;">of</span></span>
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192
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<pre style="margin: 0;">+<span id="LC192" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">v</span></span>
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193
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<pre style="margin: 0;">+<span id="LC193" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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194
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<pre style="margin: 0;">+<span id="LC194" class="line" lang="haskell"> <span class="n" style="color: #333;">compress</span> <span class="n" style="color: #333;">v</span></span>
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195
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<pre style="margin: 0;">+<span id="LC195" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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196
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<pre style="margin: 0;">+<span id="LC196" class="line" lang="haskell"> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">v</span></span>
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197
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<pre style="margin: 0;">+<span id="LC197" class="line" lang="haskell"> <span class="n" style="color: #333;">la</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">a</span></span>
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198
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<pre style="margin: 0;">+<span id="LC198" class="line" lang="haskell"> <span class="n" style="color: #333;">sl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">l</span></span>
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199
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<pre style="margin: 0;">+<span id="LC199" class="line" lang="haskell"> <span class="n" style="color: #333;">sla</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">la</span></span>
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200
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<pre style="margin: 0;">+<span id="LC200" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">sl</span> <span class="o" style="font-weight: 600;"><=</span> <span class="n" style="color: #333;">sla</span> <span class="kr" style="font-weight: 600;">of</span></span>
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201
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<pre style="margin: 0;">+<span id="LC201" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">l</span></span>
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202
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<pre style="margin: 0;">+<span id="LC202" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">la</span></span>
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203
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<pre style="margin: 0;">+<span id="LC203" class="line" lang="haskell"></span>
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204
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<pre style="margin: 0;">+<span id="LC204" class="line" lang="haskell"><span class="n" style="color: #333;">compress</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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205
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<pre style="margin: 0;">+<span id="LC205" class="line" lang="haskell"><span class="n" style="color: #333;">compress</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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206
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<pre style="margin: 0;">+<span id="LC206" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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207
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<pre style="margin: 0;">+<span id="LC207" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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208
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<pre style="margin: 0;">+<span id="LC208" class="line" lang="haskell"> <span class="n" style="color: #333;">aa</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">a</span></span>
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209
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<pre style="margin: 0;">+<span id="LC209" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">aa</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">n0</span><span class="p">)</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">do</span></span>
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210
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<pre style="margin: 0;">+<span id="LC210" class="line" lang="haskell"> <span class="n" style="color: #333;">compress</span> <span class="n" style="color: #333;">a</span></span>
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211
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<pre style="margin: 0;">+<span id="LC211" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">v</span></span>
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212
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<pre style="margin: 0;">+<span id="LC212" class="line" lang="haskell"> <span class="n" style="color: #333;">aa</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ancestorM</span> <span class="n" style="color: #333;">a</span></span>
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213
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<pre style="margin: 0;">+<span id="LC213" class="line" lang="haskell"> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">v</span></span>
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214
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<pre style="margin: 0;">+<span id="LC214" class="line" lang="haskell"> <span class="n" style="color: #333;">la</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC215" class="line" lang="haskell"> <span class="n" style="color: #333;">sl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">l</span></span>
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<pre style="margin: 0;">+<span id="LC216" class="line" lang="haskell"> <span class="n" style="color: #333;">sla</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">la</span></span>
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217
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<pre style="margin: 0;">+<span id="LC217" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">sla</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">sl</span><span class="p">)</span></span>
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218
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">labelE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">la</span><span class="p">)</span></span>
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219
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<pre style="margin: 0;">+<span id="LC219" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">aa</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC220" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC221" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC222" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC223" class="line" lang="haskell"><span class="n" style="color: #333;">link</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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224
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<pre style="margin: 0;">+<span id="LC224" class="line" lang="haskell"><span class="n" style="color: #333;">link</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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225
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<pre style="margin: 0;">+<span id="LC225" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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226
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<pre style="margin: 0;">+<span id="LC226" class="line" lang="haskell"> <span class="n" style="color: #333;">lw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">w</span></span>
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227
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<pre style="margin: 0;">+<span id="LC227" class="line" lang="haskell"> <span class="n" style="color: #333;">slw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">lw</span></span>
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228
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<pre style="margin: 0;">+<span id="LC228" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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229
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<pre style="margin: 0;">+<span id="LC229" class="line" lang="haskell"> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">s</span></span>
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230
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<pre style="margin: 0;">+<span id="LC230" class="line" lang="haskell"> <span class="n" style="color: #333;">lc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">c</span></span>
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231
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<pre style="margin: 0;">+<span id="LC231" class="line" lang="haskell"> <span class="n" style="color: #333;">slc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">lc</span></span>
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232
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<pre style="margin: 0;">+<span id="LC232" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">slw</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">slc</span> <span class="kr" style="font-weight: 600;">of</span></span>
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233
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<pre style="margin: 0;">+<span id="LC233" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">s</span></span>
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234
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<pre style="margin: 0;">+<span id="LC234" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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235
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<pre style="margin: 0;">+<span id="LC235" class="line" lang="haskell"> <span class="n" style="color: #333;">zs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">s</span></span>
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236
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<pre style="margin: 0;">+<span id="LC236" class="line" lang="haskell"> <span class="n" style="color: #333;">zc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">c</span></span>
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237
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<pre style="margin: 0;">+<span id="LC237" class="line" lang="haskell"> <span class="n" style="color: #333;">cc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">c</span></span>
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238
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<pre style="margin: 0;">+<span id="LC238" class="line" lang="haskell"> <span class="n" style="color: #333;">zcc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">cc</span></span>
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239
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<pre style="margin: 0;">+<span id="LC239" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">2</span><span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">zc</span> <span class="o" style="font-weight: 600;"><=</span> <span class="n" style="color: #333;">zs</span><span class="o" style="font-weight: 600;">+</span><span class="n" style="color: #333;">zcc</span> <span class="kr" style="font-weight: 600;">of</span></span>
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240
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<pre style="margin: 0;">+<span id="LC240" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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241
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<pre style="margin: 0;">+<span id="LC241" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">s</span></span>
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242
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<pre style="margin: 0;">+<span id="LC242" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">childE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">cc</span></span>
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243
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">s</span></span>
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244
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<pre style="margin: 0;">+<span id="LC244" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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245
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<pre style="margin: 0;">+<span id="LC245" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sizeE</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">zs</span></span>
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246
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<pre style="margin: 0;">+<span id="LC246" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">c</span></span>
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247
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<pre style="margin: 0;">+<span id="LC247" class="line" lang="haskell"> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">c</span></span>
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248
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="haskell"> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">balance</span> <span class="n" style="color: #333;">w</span></span>
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249
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<pre style="margin: 0;">+<span id="LC249" class="line" lang="haskell"> <span class="n" style="color: #333;">lw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">labelM</span> <span class="n" style="color: #333;">w</span></span>
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250
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<pre style="margin: 0;">+<span id="LC250" class="line" lang="haskell"> <span class="n" style="color: #333;">zw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">w</span></span>
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251
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<pre style="margin: 0;">+<span id="LC251" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">labelE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">lw</span></span>
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252
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<pre style="margin: 0;">+<span id="LC252" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sizeE</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">+</span><span class="n" style="color: #333;">zw</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">v</span></span>
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<td class="diff-line-num new new_line" data-linenumber="253" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
253
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<pre style="margin: 0;">+<span id="LC253" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">follow</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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254
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<pre style="margin: 0;">+<span id="LC254" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">n0</span><span class="p">)</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">do</span></span>
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255
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<pre style="margin: 0;">+<span id="LC255" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ancestorE</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">v</span></span>
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256
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<pre style="margin: 0;">+<span id="LC256" class="line" lang="haskell"> <span class="n" style="color: #333;">follow</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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257
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<pre style="margin: 0;">+<span id="LC257" class="line" lang="haskell"> <span class="n" style="color: #333;">zv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sizeM</span> <span class="n" style="color: #333;">v</span></span>
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258
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<pre style="margin: 0;">+<span id="LC258" class="line" lang="haskell"> <span class="n" style="color: #333;">follow</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">zv</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">2</span><span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">zw</span> <span class="kr" style="font-weight: 600;">of</span></span>
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259
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<pre style="margin: 0;">+<span id="LC259" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">s</span></span>
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260
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<pre style="margin: 0;">+<span id="LC260" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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261
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<pre style="margin: 0;">+<span id="LC261" class="line" lang="haskell"> <span class="n" style="color: #333;">cv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">childM</span> <span class="n" style="color: #333;">v</span></span>
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262
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<pre style="margin: 0;">+<span id="LC262" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">childE</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">s</span></span>
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263
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<pre style="margin: 0;">+<span id="LC263" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">cv</span></span>
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264
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<pre style="margin: 0;">+<span id="LC264" class="line" lang="haskell"></span>
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265
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<pre style="margin: 0;">+<span id="LC265" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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266
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<pre style="margin: 0;">+<span id="LC266" class="line" lang="haskell"></span>
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267
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<pre style="margin: 0;">+<span id="LC267" class="line" lang="haskell"><span class="n" style="color: #333;">dfsDom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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268
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<pre style="margin: 0;">+<span id="LC268" class="line" lang="haskell"><span class="n" style="color: #333;">dfsDom</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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269
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<pre style="margin: 0;">+<span id="LC269" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">i</span></span>
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270
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<pre style="margin: 0;">+<span id="LC270" class="line" lang="haskell"> <span class="n" style="color: #333;">n0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zeroM</span></span>
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271
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<pre style="margin: 0;">+<span id="LC271" class="line" lang="haskell"> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rootM</span></span>
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272
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<pre style="margin: 0;">+<span id="LC272" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">parentE</span> <span class="n" style="color: #333;">r</span> <span class="n" style="color: #333;">n0</span></span>
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273
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<pre style="margin: 0;">+<span id="LC273" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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274
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<pre style="margin: 0;">+<span id="LC274" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">nextM</span></span>
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275
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<pre style="margin: 0;">+<span id="LC275" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">dfnE</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">n</span></span>
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276
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<pre style="margin: 0;">+<span id="LC276" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">sdnoE</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">n</span></span>
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277
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<pre style="margin: 0;">+<span id="LC277" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">ndfsE</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">i</span></span>
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278
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<pre style="margin: 0;">+<span id="LC278" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">labelE</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">i</span></span>
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<td class="diff-line-num new new_line" data-linenumber="279" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
279
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<pre style="margin: 0;">+<span id="LC279" class="line" lang="haskell"> <span class="n" style="color: #333;">ss</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">succsM</span> <span class="n" style="color: #333;">i</span></span>
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<pre style="margin: 0;">+<span id="LC280" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">ss</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">j</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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281
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<pre style="margin: 0;">+<span id="LC281" class="line" lang="haskell"> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sdnoM</span> <span class="n" style="color: #333;">j</span></span>
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282
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<pre style="margin: 0;">+<span id="LC282" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">s</span><span class="o" style="font-weight: 600;">==</span><span class="mi" style="color: #099;">0</span> <span class="kr" style="font-weight: 600;">of</span></span>
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283
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<pre style="margin: 0;">+<span id="LC283" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span><span class="nb" style="color: #0086b3;">()</span></span>
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284
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<pre style="margin: 0;">+<span id="LC284" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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285
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<pre style="margin: 0;">+<span id="LC285" class="line" lang="haskell"> <span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">parentE</span> <span class="n" style="color: #333;">j</span> <span class="n" style="color: #333;">i</span></span>
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286
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<pre style="margin: 0;">+<span id="LC286" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">j</span><span class="p">)</span></span>
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287
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<pre style="margin: 0;">+<span id="LC287" class="line" lang="haskell"></span>
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288
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<pre style="margin: 0;">+<span id="LC288" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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289
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<pre style="margin: 0;">+<span id="LC289" class="line" lang="haskell"></span>
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290
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<pre style="margin: 0;">+<span id="LC290" class="line" lang="haskell"><span class="n" style="color: #333;">initEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Env</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC291" class="line" lang="haskell"><span class="n" style="color: #333;">initEnv</span> <span class="p">(</span><span class="n" style="color: #333;">r0</span><span class="p">,</span><span class="n" style="color: #333;">g0</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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292
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<pre style="margin: 0;">+<span id="LC292" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Graph renumbered to indices from 1 to |V|</span></span>
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293
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<pre style="margin: 0;">+<span id="LC293" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">g</span><span class="p">,</span><span class="n" style="color: #333;">rnmap</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">renum</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">g0</span></span>
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294
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<pre style="margin: 0;">+<span id="LC294" class="line" lang="haskell"> <span class="n" style="color: #333;">pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">predG</span> <span class="n" style="color: #333;">g</span> <span class="c1" style="color: #998; font-style: italic;">-- reverse graph</span></span>
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295
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<pre style="margin: 0;">+<span id="LC295" class="line" lang="haskell"> <span class="n" style="color: #333;">root</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rnmap</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.!</span> <span class="n" style="color: #333;">r0</span> <span class="c1" style="color: #998; font-style: italic;">-- renamed root</span></span>
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296
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<pre style="margin: 0;">+<span id="LC296" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">size</span> <span class="n" style="color: #333;">g</span></span>
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297
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<pre style="margin: 0;">+<span id="LC297" class="line" lang="haskell"> <span class="n" style="color: #333;">ns</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span></span>
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298
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<pre style="margin: 0;">+<span id="LC298" class="line" lang="haskell"> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span></span>
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299
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<pre style="margin: 0;">+<span id="LC299" class="line" lang="haskell"></span>
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300
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<pre style="margin: 0;">+<span id="LC300" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">bucket</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span></span>
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<pre style="margin: 0;">+<span id="LC301" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">zip</span> <span class="n" style="color: #333;">ns</span> <span class="p">(</span><span class="n" style="color: #333;">repeat</span> <span class="n" style="color: #333;">mempty</span><span class="p">))</span></span>
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302
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<pre style="margin: 0;">+<span id="LC302" class="line" lang="haskell"></span>
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303
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<pre style="margin: 0;">+<span id="LC303" class="line" lang="haskell"> <span class="n" style="color: #333;">rna</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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304
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<pre style="margin: 0;">+<span id="LC304" class="line" lang="haskell"> <span class="n" style="color: #333;">writes</span> <span class="n" style="color: #333;">rna</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">swap</span></span>
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305
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<pre style="margin: 0;">+<span id="LC305" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">rnmap</span><span class="p">))</span></span>
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306
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<pre style="margin: 0;">+<span id="LC306" class="line" lang="haskell"></span>
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307
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<pre style="margin: 0;">+<span id="LC307" class="line" lang="haskell"> <span class="n" style="color: #333;">doms</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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308
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<pre style="margin: 0;">+<span id="LC308" class="line" lang="haskell"> <span class="n" style="color: #333;">sdno</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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309
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<pre style="margin: 0;">+<span id="LC309" class="line" lang="haskell"> <span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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310
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<pre style="margin: 0;">+<span id="LC310" class="line" lang="haskell"> <span class="n" style="color: #333;">parent</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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311
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<pre style="margin: 0;">+<span id="LC311" class="line" lang="haskell"> <span class="n" style="color: #333;">ancestor</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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312
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<pre style="margin: 0;">+<span id="LC312" class="line" lang="haskell"> <span class="n" style="color: #333;">child</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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313
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<pre style="margin: 0;">+<span id="LC313" class="line" lang="haskell"> <span class="n" style="color: #333;">label</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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314
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<pre style="margin: 0;">+<span id="LC314" class="line" lang="haskell"> <span class="n" style="color: #333;">ndfs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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315
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<pre style="margin: 0;">+<span id="LC315" class="line" lang="haskell"> <span class="n" style="color: #333;">dfn</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newI</span> <span class="n" style="color: #333;">m</span></span>
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316
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<pre style="margin: 0;">+<span id="LC316" class="line" lang="haskell"></span>
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317
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<pre style="margin: 0;">+<span id="LC317" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Initialize all arrays</span></span>
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318
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<pre style="margin: 0;">+<span id="LC318" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">doms</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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319
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<pre style="margin: 0;">+<span id="LC319" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">sdno</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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320
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<pre style="margin: 0;">+<span id="LC320" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">size</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">1</span><span class="p">)</span></span>
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321
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<pre style="margin: 0;">+<span id="LC321" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">ancestor</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC322" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="n" style="color: #333;">child</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC323" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC324" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">doms</span><span class="o" style="font-weight: 600;">.=</span><span class="n" style="color: #333;">root</span><span class="p">)</span> <span class="n" style="color: #333;">root</span></span>
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<pre style="margin: 0;">+<span id="LC325" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">size</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">+<span id="LC326" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">label</span><span class="o" style="font-weight: 600;">.=</span><span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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327
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<pre style="margin: 0;">+<span id="LC327" class="line" lang="haskell"></span>
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328
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<pre style="margin: 0;">+<span id="LC328" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Env</span></span>
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329
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<pre style="margin: 0;">+<span id="LC329" class="line" lang="haskell"> <span class="p">{</span><span class="n" style="color: #333;">rnE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rna</span></span>
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330
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<pre style="margin: 0;">+<span id="LC330" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfsE</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span></span>
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331
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<pre style="margin: 0;">+<span id="LC331" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">zeroE</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span></span>
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332
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<pre style="margin: 0;">+<span id="LC332" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">rootE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">root</span></span>
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333
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<pre style="margin: 0;">+<span id="LC333" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">labelE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">label</span></span>
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334
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<pre style="margin: 0;">+<span id="LC334" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">parentE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">parent</span></span>
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335
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<pre style="margin: 0;">+<span id="LC335" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ancestorE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ancestor</span></span>
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336
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<pre style="margin: 0;">+<span id="LC336" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">childE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">child</span></span>
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337
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<pre style="margin: 0;">+<span id="LC337" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">ndfsE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ndfs</span></span>
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338
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<pre style="margin: 0;">+<span id="LC338" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">dfnE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dfn</span></span>
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339
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<pre style="margin: 0;">+<span id="LC339" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sdnoE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sdno</span></span>
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340
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<pre style="margin: 0;">+<span id="LC340" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">sizeE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">size</span></span>
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341
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<pre style="margin: 0;">+<span id="LC341" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">succE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">g</span></span>
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342
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">predE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span></span>
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343
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<pre style="margin: 0;">+<span id="LC343" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">bucketE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bucket</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="haskell"> <span class="p">,</span><span class="n" style="color: #333;">domE</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">doms</span><span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC345" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC346" class="line" lang="haskell"><span class="n" style="color: #333;">fromEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)]</span></span>
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<pre style="margin: 0;">+<span id="LC347" class="line" lang="haskell"><span class="n" style="color: #333;">fromEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC348" class="line" lang="haskell"> <span class="n" style="color: #333;">dom</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">domE</span></span>
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<pre style="margin: 0;">+<span id="LC349" class="line" lang="haskell"> <span class="n" style="color: #333;">rn</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">rnE</span></span>
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<pre style="margin: 0;">+<span id="LC350" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- r <- gets rootE</span></span>
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<pre style="margin: 0;">+<span id="LC351" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span> <span class="p">(</span><span class="n" style="color: #333;">getBounds</span> <span class="n" style="color: #333;">dom</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC352" class="line" lang="haskell"> <span class="n" style="color: #333;">forM</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="n" style="color: #333;">n</span><span class="p">]</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC353" class="line" lang="haskell"> <span class="n" style="color: #333;">j</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span><span class="p">(</span><span class="n" style="color: #333;">rn</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC354" class="line" lang="haskell"> <span class="n" style="color: #333;">d</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span><span class="p">(</span><span class="n" style="color: #333;">dom</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC355" class="line" lang="haskell"> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">st</span><span class="p">(</span><span class="n" style="color: #333;">rn</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">d</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC356" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">j</span><span class="p">,</span><span class="n" style="color: #333;">k</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC357" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC358" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC359" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC360" class="line" lang="haskell"><span class="n" style="color: #333;">zeroM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">+<span id="LC361" class="line" lang="haskell"><span class="n" style="color: #333;">zeroM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">zeroE</span></span>
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<pre style="margin: 0;">+<span id="LC362" class="line" lang="haskell"><span class="n" style="color: #333;">domM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">+<span id="LC363" class="line" lang="haskell"><span class="n" style="color: #333;">domM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">domE</span></span>
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<pre style="margin: 0;">+<span id="LC364" class="line" lang="haskell"><span class="n" style="color: #333;">rootM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">+<span id="LC365" class="line" lang="haskell"><span class="n" style="color: #333;">rootM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">rootE</span></span>
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366
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<pre style="margin: 0;">+<span id="LC366" class="line" lang="haskell"><span class="n" style="color: #333;">succsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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367
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<pre style="margin: 0;">+<span id="LC367" class="line" lang="haskell"><span class="n" style="color: #333;">succsM</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">succE</span><span class="p">)</span></span>
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368
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<pre style="margin: 0;">+<span id="LC368" class="line" lang="haskell"><span class="n" style="color: #333;">predsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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369
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<pre style="margin: 0;">+<span id="LC369" class="line" lang="haskell"><span class="n" style="color: #333;">predsM</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">predE</span><span class="p">)</span></span>
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370
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<pre style="margin: 0;">+<span id="LC370" class="line" lang="haskell"><span class="n" style="color: #333;">bucketM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">]</span></span>
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371
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<pre style="margin: 0;">+<span id="LC371" class="line" lang="haskell"><span class="n" style="color: #333;">bucketM</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gets</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">bucketE</span><span class="p">)</span></span>
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372
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<pre style="margin: 0;">+<span id="LC372" class="line" lang="haskell"><span class="n" style="color: #333;">sizeM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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373
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<pre style="margin: 0;">+<span id="LC373" class="line" lang="haskell"><span class="n" style="color: #333;">sizeM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">sizeE</span></span>
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374
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<pre style="margin: 0;">+<span id="LC374" class="line" lang="haskell"><span class="n" style="color: #333;">sdnoM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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375
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<pre style="margin: 0;">+<span id="LC375" class="line" lang="haskell"><span class="n" style="color: #333;">sdnoM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">sdnoE</span></span>
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376
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<pre style="margin: 0;">+<span id="LC376" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dfnM :: Node -> Dom s Int</span></span>
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377
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<pre style="margin: 0;">+<span id="LC377" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dfnM = fetch dfnE</span></span>
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378
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<pre style="margin: 0;">+<span id="LC378" class="line" lang="haskell"><span class="n" style="color: #333;">ndfsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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379
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<pre style="margin: 0;">+<span id="LC379" class="line" lang="haskell"><span class="n" style="color: #333;">ndfsM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">ndfsE</span></span>
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380
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<pre style="margin: 0;">+<span id="LC380" class="line" lang="haskell"><span class="n" style="color: #333;">childM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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381
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<pre style="margin: 0;">+<span id="LC381" class="line" lang="haskell"><span class="n" style="color: #333;">childM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">childE</span></span>
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382
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<pre style="margin: 0;">+<span id="LC382" class="line" lang="haskell"><span class="n" style="color: #333;">ancestorM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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383
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<pre style="margin: 0;">+<span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">ancestorM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">ancestorE</span></span>
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384
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"><span class="n" style="color: #333;">parentM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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385
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<pre style="margin: 0;">+<span id="LC385" class="line" lang="haskell"><span class="n" style="color: #333;">parentM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">parentE</span></span>
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386
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="haskell"><span class="n" style="color: #333;">labelM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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387
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<pre style="margin: 0;">+<span id="LC387" class="line" lang="haskell"><span class="n" style="color: #333;">labelM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">labelE</span></span>
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388
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<pre style="margin: 0;">+<span id="LC388" class="line" lang="haskell"><span class="n" style="color: #333;">nextM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Dom</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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389
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<pre style="margin: 0;">+<span id="LC389" class="line" lang="haskell"><span class="n" style="color: #333;">nextM</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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390
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<pre style="margin: 0;">+<span id="LC390" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">dfsE</span></span>
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391
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<pre style="margin: 0;">+<span id="LC391" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">n'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span></span>
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392
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<pre style="margin: 0;">+<span id="LC392" class="line" lang="haskell"> <span class="n" style="color: #333;">modify</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">e</span><span class="p">{</span><span class="n" style="color: #333;">dfsE</span><span class="o" style="font-weight: 600;">=</span><span class="n" style="color: #333;">n'</span><span class="p">})</span></span>
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393
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<pre style="margin: 0;">+<span id="LC393" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">n'</span></span>
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394
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<pre style="margin: 0;">+<span id="LC394" class="line" lang="haskell"></span>
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395
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<pre style="margin: 0;">+<span id="LC395" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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396
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<pre style="margin: 0;">+<span id="LC396" class="line" lang="haskell"></span>
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397
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<pre style="margin: 0;">+<span id="LC397" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">STUArray</span></span>
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398
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<pre style="margin: 0;">+<span id="LC398" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="n" style="color: #333;">a</span></span>
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399
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<pre style="margin: 0;">+<span id="LC399" class="line" lang="haskell"></span>
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400
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<pre style="margin: 0;">+<span id="LC400" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">infixl</span> <span class="mi" style="color: #099;">9</span> <span class="o" style="font-weight: 600;">!:</span></span>
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401
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<pre style="margin: 0;">+<span id="LC401" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">infixr</span> <span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">.=</span></span>
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402
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<pre style="margin: 0;">+<span id="LC402" class="line" lang="haskell"></span>
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403
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<pre style="margin: 0;">+<span id="LC403" class="line" lang="haskell"><span class="cd">-- | arr .= x idx => write x to index</span></span>
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404
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<pre style="margin: 0;">+<span id="LC404" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">.=</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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405
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<pre style="margin: 0;">+<span id="LC405" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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406
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<pre style="margin: 0;">+<span id="LC406" class="line" lang="haskell"><span class="p">(</span><span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">.=</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeWrite</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">x</span></span>
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407
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<pre style="margin: 0;">+<span id="LC407" class="line" lang="haskell"></span>
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408
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<pre style="margin: 0;">+<span id="LC408" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">!:</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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409
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<pre style="margin: 0;">+<span id="LC409" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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410
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<pre style="margin: 0;">+<span id="LC410" class="line" lang="haskell"><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">!:</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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411
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<pre style="margin: 0;">+<span id="LC411" class="line" lang="haskell"> <span class="n" style="color: #333;">o</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">unsafeRead</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">i</span></span>
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412
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<pre style="margin: 0;">+<span id="LC412" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$!</span> <span class="n" style="color: #333;">o</span></span>
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413
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<pre style="margin: 0;">+<span id="LC413" class="line" lang="haskell"></span>
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414
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<pre style="margin: 0;">+<span id="LC414" class="line" lang="haskell"><span class="n" style="color: #333;">new</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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415
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<pre style="margin: 0;">+<span id="LC415" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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416
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<pre style="margin: 0;">+<span id="LC416" class="line" lang="haskell"><span class="n" style="color: #333;">new</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeNewArray_</span> <span class="p">(</span><span class="mi" style="color: #099;">0</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span></span>
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417
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<pre style="margin: 0;">+<span id="LC417" class="line" lang="haskell"></span>
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418
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<pre style="margin: 0;">+<span id="LC418" class="line" lang="haskell"><span class="n" style="color: #333;">newI</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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419
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<pre style="margin: 0;">+<span id="LC419" class="line" lang="haskell"><span class="n" style="color: #333;">newI</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">new</span></span>
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420
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<pre style="margin: 0;">+<span id="LC420" class="line" lang="haskell"></span>
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421
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<pre style="margin: 0;">+<span id="LC421" class="line" lang="haskell"><span class="n" style="color: #333;">writes</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span><span class="p">))</span></span>
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422
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<pre style="margin: 0;">+<span id="LC422" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">,</span><span class="n" style="color: #333;">a</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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423
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<pre style="margin: 0;">+<span id="LC423" class="line" lang="haskell"><span class="n" style="color: #333;">writes</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">forM_</span> <span class="n" style="color: #333;">xs</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">i</span><span class="p">,</span><span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.=</span><span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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426
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<pre style="margin: 0;">+<span id="LC426" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monoid</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>
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427
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<pre style="margin: 0;">+<span id="LC427" class="line" lang="haskell"><span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="p">)</span> <span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">maybe</span> <span class="n" style="color: #333;">mempty</span> <span class="n" style="color: #333;">id</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">g</span><span class="p">)</span></span>
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428
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429
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<pre style="margin: 0;">+<span id="LC429" class="line" lang="haskell"><span class="n" style="color: #333;">fromAdj</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">])]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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<pre style="margin: 0;">+<span id="LC430" class="line" lang="haskell"><span class="n" style="color: #333;">fromAdj</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span><span class="p">)</span></span>
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431
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<pre style="margin: 0;">+<span id="LC431" class="line" lang="haskell"></span>
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432
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<pre style="margin: 0;">+<span id="LC432" class="line" lang="haskell"><span class="n" style="color: #333;">fromEdges</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Edge</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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433
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<pre style="margin: 0;">+<span id="LC433" class="line" lang="haskell"><span class="n" style="color: #333;">fromEdges</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">collectI</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span> <span class="n" style="color: #333;">fst</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">singleton</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">snd</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC434" class="line" lang="haskell"></span>
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435
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<pre style="margin: 0;">+<span id="LC435" class="line" lang="haskell"><span class="n" style="color: #333;">toAdj</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">])]</span></span>
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436
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<pre style="margin: 0;">+<span id="LC436" class="line" lang="haskell"><span class="n" style="color: #333;">toAdj</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span></span>
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437
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<pre style="margin: 0;">+<span id="LC437" class="line" lang="haskell"></span>
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438
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<pre style="margin: 0;">+<span id="LC438" class="line" lang="haskell"><span class="n" style="color: #333;">toEdges</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Edge</span><span class="p">]</span></span>
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439
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<pre style="margin: 0;">+<span id="LC439" class="line" lang="haskell"><span class="n" style="color: #333;">toEdges</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">concatMap</span> <span class="p">(</span><span class="n" style="color: #333;">uncurry</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="o" style="font-weight: 600;">.</span> <span class="p">(,)))</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">toAdj</span></span>
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440
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<pre style="margin: 0;">+<span id="LC440" class="line" lang="haskell"></span>
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441
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<pre style="margin: 0;">+<span id="LC441" class="line" lang="haskell"><span class="n" style="color: #333;">predG</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span></span>
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442
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<pre style="margin: 0;">+<span id="LC442" class="line" lang="haskell"><span class="n" style="color: #333;">predG</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">unionWith</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="n" style="color: #333;">g0</span></span>
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<pre style="margin: 0;">+<span id="LC443" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">g0</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">const</span> <span class="n" style="color: #333;">mempty</span><span class="p">)</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">+<span id="LC444" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flip</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">foldrWithKey</span> <span class="n" style="color: #333;">mempty</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC445" class="line" lang="haskell"> <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span> <span class="n" style="color: #333;">mappend</span> <span class="n" style="color: #333;">p</span></span>
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<pre style="margin: 0;">+<span id="LC446" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">singleton</span> <span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC447" class="line" lang="haskell"> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">+<span id="LC448" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC449" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC450" class="line" lang="haskell"><span class="n" style="color: #333;">pruneReach</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span></span>
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<pre style="margin: 0;">+<span id="LC451" class="line" lang="haskell"><span class="n" style="color: #333;">pruneReach</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">g2</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC452" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reachable</span></span>
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<pre style="margin: 0;">+<span id="LC453" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">maybe</span> <span class="n" style="color: #333;">mempty</span> <span class="n" style="color: #333;">id</span></span>
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<pre style="margin: 0;">+<span id="LC454" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">flip</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">r</span></span>
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<pre style="margin: 0;">+<span id="LC455" class="line" lang="haskell"> <span class="n" style="color: #333;">g2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span></span>
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<pre style="margin: 0;">+<span id="LC456" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">second</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">filter</span> <span class="p">(`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">member</span><span class="p">`</span><span class="n" style="color: #333;">is</span><span class="p">)))</span></span>
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<pre style="margin: 0;">+<span id="LC457" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">filter</span> <span class="p">((`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">member</span><span class="p">`</span><span class="n" style="color: #333;">is</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fst</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC458" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">+<span id="LC459" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC460" class="line" lang="haskell"><span class="n" style="color: #333;">tip</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span><span class="p">])</span></span>
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<pre style="margin: 0;">+<span id="LC461" class="line" lang="haskell"><span class="n" style="color: #333;">tip</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">ts</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">ts</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC462" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC463" class="line" lang="haskell"><span class="n" style="color: #333;">parents</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)]</span></span>
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<pre style="margin: 0;">+<span id="LC464" class="line" lang="haskell"><span class="n" style="color: #333;">parents</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">+<span id="LC465" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">concatMap</span> <span class="n" style="color: #333;">parents</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">+<span id="LC466" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="p">(,)</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">rootLabel</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC467" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC468" class="line" lang="haskell"><span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">])]</span></span>
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<pre style="margin: 0;">+<span id="LC469" class="line" lang="haskell"><span class="n" style="color: #333;">ancestors</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;">+<span id="LC470" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">xs</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC471" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">acc'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">acc</span></span>
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<pre style="margin: 0;">+<span id="LC472" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">acc'</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">concatMap</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc'</span><span class="p">)</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">+<span id="LC473" class="line" lang="haskell"> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="p">(,)</span> <span class="n" style="color: #333;">is</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">rootLabel</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC474" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC475" class="line" lang="haskell"><span class="n" style="color: #333;">asGraph</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span></span>
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<pre style="margin: 0;">+<span id="LC476" class="line" lang="haskell"><span class="n" style="color: #333;">asGraph</span> <span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">t</span> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">fromAdj</span> <span class="n" style="color: #333;">g</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC477" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">ts</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">as</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unzip</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">tip</span><span class="p">)</span> <span class="n" style="color: #333;">ts</span></span>
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<pre style="margin: 0;">+<span id="LC478" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">as</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">concatMap</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">ts</span></span>
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<pre style="margin: 0;">+<span id="LC479" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC480" class="line" lang="haskell"><span class="n" style="color: #333;">asTree</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rooted</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tree</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">+<span id="LC481" class="line" lang="haskell"><span class="n" style="color: #333;">asTree</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">go</span> <span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">)</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC482" class="line" lang="haskell"> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">!</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC483" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">r</span></span>
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<pre style="margin: 0;">+<span id="LC484" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC485" class="line" lang="haskell"><span class="n" style="color: #333;">reachable</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NodeSet</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NodeSet</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC486" class="line" lang="haskell"><span class="n" style="color: #333;">reachable</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">singleton</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">a</span></span>
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487
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<pre style="margin: 0;">+<span id="LC487" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">seen</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span></span>
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488
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<pre style="margin: 0;">+<span id="LC488" class="line" lang="haskell"> <span class="n" style="color: #333;">as</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">difference</span><span class="p">`</span> <span class="n" style="color: #333;">seen</span><span class="p">)</span></span>
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489
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<pre style="margin: 0;">+<span id="LC489" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">foldl'</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span><span class="p">`</span> <span class="n" style="color: #333;">seen</span><span class="p">)</span> <span class="n" style="color: #333;">as</span></span>
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490
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<pre style="margin: 0;">+<span id="LC490" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC491" class="line" lang="haskell"><span class="n" style="color: #333;">collectI</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">c</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC492" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">c</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">c</span></span>
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<pre style="margin: 0;">+<span id="LC493" class="line" lang="haskell"><span class="n" style="color: #333;">collectI</span> <span class="p">(</span><span class="o" style="font-weight: 600;"><></span><span class="p">)</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">+<span id="LC494" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span> <span class="p">(</span><span class="o" style="font-weight: 600;"><></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC495" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC496" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="p">)</span> <span class="n" style="color: #333;">mempty</span></span>
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<pre style="margin: 0;">+<span id="LC497" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC498" class="line" lang="haskell"><span class="cd">-- | renum n g: Rename all nodes</span></span>
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<pre style="margin: 0;">+<span id="LC499" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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500
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<pre style="margin: 0;">+<span id="LC500" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Gives nodes sequential names starting at n.</span></span>
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501
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<pre style="margin: 0;">+<span id="LC501" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns the new graph and a mapping.</span></span>
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502
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<pre style="margin: 0;">+<span id="LC502" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (renamed, old -> new)</span></span>
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503
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<pre style="margin: 0;">+<span id="LC503" class="line" lang="haskell"><span class="n" style="color: #333;">renum</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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504
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<pre style="margin: 0;">+<span id="LC504" class="line" lang="haskell"><span class="n" style="color: #333;">renum</span> <span class="n" style="color: #333;">from</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span><span class="n" style="color: #333;">m</span><span class="p">,</span><span class="n" style="color: #333;">g</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span><span class="p">(</span><span class="n" style="color: #333;">g</span><span class="p">,</span><span class="n" style="color: #333;">m</span><span class="p">))</span></span>
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505
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<pre style="margin: 0;">+<span id="LC505" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">foldrWithKey</span></span>
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506
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<pre style="margin: 0;">+<span id="LC506" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">ss</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">new</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span></span>
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507
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<pre style="margin: 0;">+<span id="LC507" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">j</span><span class="p">,</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">i</span></span>
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508
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<pre style="margin: 0;">+<span id="LC508" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">n3</span><span class="p">,</span><span class="n" style="color: #333;">env3</span><span class="p">,</span><span class="n" style="color: #333;">ss2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fold</span></span>
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509
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<pre style="margin: 0;">+<span id="LC509" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env</span><span class="p">,</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">new</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span></span>
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510
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<pre style="margin: 0;">+<span id="LC510" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">k</span> <span class="kr" style="font-weight: 600;">of</span></span>
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511
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<pre style="margin: 0;">+<span id="LC511" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">,</span><span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span><span class="p">`</span> <span class="n" style="color: #333;">new</span><span class="p">))</span></span>
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512
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<pre style="margin: 0;">+<span id="LC512" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">n2</span><span class="p">,</span><span class="n" style="color: #333;">env2</span><span class="p">,</span><span class="n" style="color: #333;">mempty</span><span class="p">)</span> <span class="n" style="color: #333;">ss</span></span>
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513
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<pre style="margin: 0;">+<span id="LC513" class="line" lang="haskell"> <span class="n" style="color: #333;">new2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span> <span class="n" style="color: #333;">j</span> <span class="n" style="color: #333;">ss2</span> <span class="n" style="color: #333;">new</span></span>
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514
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<pre style="margin: 0;">+<span id="LC514" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">n3</span><span class="p">,</span><span class="n" style="color: #333;">env3</span><span class="p">,</span><span class="n" style="color: #333;">new2</span><span class="p">))</span> <span class="p">(</span><span class="n" style="color: #333;">from</span><span class="p">,</span><span class="n" style="color: #333;">mempty</span><span class="p">,</span><span class="n" style="color: #333;">mempty</span><span class="p">)</span></span>
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515
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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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516
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<pre style="margin: 0;">+<span id="LC516" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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517
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<pre style="margin: 0;">+<span id="LC517" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Node</span></span>
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<pre style="margin: 0;">+<span id="LC518" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">)</span></span>
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519
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<pre style="margin: 0;">+<span id="LC519" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span></span>
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520
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<pre style="margin: 0;">+<span id="LC520" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">env</span> <span class="kr" style="font-weight: 600;">of</span></span>
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521
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<pre style="margin: 0;">+<span id="LC521" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">j</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">j</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="n" style="color: #333;">env</span><span class="p">)</span></span>
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522
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<pre style="margin: 0;">+<span id="LC522" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">IM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">env</span><span class="p">)</span></span>
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523
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<pre style="margin: 0;">+<span id="LC523" class="line" lang="haskell"></span>
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524
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<pre style="margin: 0;">+<span id="LC524" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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525
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<pre style="margin: 0;">+<span id="LC525" class="line" lang="haskell"></span>
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526
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<pre style="margin: 0;">+<span id="LC526" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Nothing better than reinvinting the state monad.</span></span>
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527
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<pre style="margin: 0;">+<span id="LC527" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">{</span><span class="n" style="color: #333;">unS</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">o</span><span class="o" style="font-weight: 600;">.</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">o</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">o</span><span class="p">}</span></span>
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528
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<pre style="margin: 0;">+<span id="LC528" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Functor</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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529
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<pre style="margin: 0;">+<span id="LC529" class="line" lang="haskell"> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">))</span></span>
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530
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<pre style="margin: 0;">+<span id="LC530" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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531
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<pre style="margin: 0;">+<span id="LC531" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pure</span></span>
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532
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<pre style="margin: 0;">+<span id="LC532" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">unS</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">k</span><span class="p">))</span></span>
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533
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<pre style="margin: 0;">+<span id="LC533" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Applicative</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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534
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<pre style="margin: 0;">+<span id="LC534" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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535
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<pre style="margin: 0;">+<span id="LC535" class="line" lang="haskell"> <span class="p">(</span><span class="o" style="font-weight: 600;"><*></span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ap</span></span>
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<pre style="margin: 0;">+<span id="LC536" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- get :: S z s s</span></span>
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<pre style="margin: 0;">+<span id="LC537" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- get = S (\k s -> k s s)</span></span>
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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell"><span class="n" style="color: #333;">gets</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC539" class="line" lang="haskell"><span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC540" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- set :: s -> S z s ()</span></span>
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<pre style="margin: 0;">+<span id="LC541" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- set s = S (\k _ -> k () s)</span></span>
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<pre style="margin: 0;">+<span id="LC542" class="line" lang="haskell"><span class="n" style="color: #333;">modify</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC543" class="line" lang="haskell"><span class="n" style="color: #333;">modify</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC544" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- runS :: S z s a -> s -> ST z (a, s)</span></span>
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<pre style="margin: 0;">+<span id="LC545" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- runS (S g) = g (\a s -> return (a,s))</span></span>
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<pre style="margin: 0;">+<span id="LC546" class="line" lang="haskell"><span class="n" style="color: #333;">evalS</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC547" class="line" lang="haskell"><span class="n" style="color: #333;">evalS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">g</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">g</span> <span class="p">((</span><span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">.</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">const</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC548" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- execS :: S z s a -> s -> ST z s</span></span>
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<pre style="margin: 0;">+<span id="LC549" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- execS (S g) = g ((return .) . flip const)</span></span>
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<pre style="margin: 0;">+<span id="LC550" class="line" lang="haskell"><span class="n" style="color: #333;">st</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC551" class="line" lang="haskell"><span class="n" style="color: #333;">st</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">s</span><span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC552" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">+<span id="LC553" class="line" lang="haskell"> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC554" class="line" lang="haskell"><span class="n" style="color: #333;">store</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">z</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC555" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC556" class="line" lang="haskell"><span class="n" style="color: #333;">store</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC557" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">f</span></span>
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<pre style="margin: 0;">+<span id="LC558" class="line" lang="haskell"> <span class="n" style="color: #333;">st</span> <span class="p">((</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.=</span><span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">i</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC559" class="line" lang="haskell"><span class="n" style="color: #333;">fetch</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A</span> <span class="n" style="color: #333;">z</span><span class="p">)</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="n" style="color: #333;">z</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC560" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Arr</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">S</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC561" class="line" lang="haskell"><span class="n" style="color: #333;">fetch</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC562" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">gets</span> <span class="n" style="color: #333;">f</span></span>
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<pre style="margin: 0;">+<span id="LC563" class="line" lang="haskell"> <span class="n" style="color: #333;">st</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">!:</span><span class="n" style="color: #333;">i</span><span class="p">)</span></span></pre>
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