[Haskell-cafe] why these two are not equivalent?

Jason Dagit dagit at codersbase.com
Sat Sep 12 15:46:08 EDT 2009

On Sat, Sep 12, 2009 at 12:08 PM, Diego Souza <dsouza at bitforest.org> wrote:

> Hi,
> I was trying to solve a simple problem in SPOJ, however, after two weeks
> trying almost everything I could think of, I was still getting
> WrongAnswer.
> Then I decided to do the same thing in C++ and I really got puzzled when
> I got ACcepted.
> I tried to understand what was different without success. I hope someone
> can tell me why spoj says the Haskell version is wrong:
> http://moonpatio.com/fastcgi/hpaste.fcgi/view?id=3583 [Haskell,WA]
> http://moonpatio.com/fastcgi/hpaste.fcgi/view?id=3582 [C++,AC]
> The problem I'm talking about is this one:
> https://www.spoj.pl/problems/SBANK/

Looks like the output should be sorted.  The C++ version does this with the
iterator over map<string, int> implicitly.  I don't spot where your haskell
version sorts the output.

There could be other problems, that's just what I can notice in 2 minutes of

Good luck!

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