GNU C++ vs MS C++ - Codeforces

Блог пользователя KrK

Автор KrK, 15 лет назад, По-английски

Hello.
I submitted this code to this problem with option "GNU C++ 4.6" and received "WA on test 1".
Output was:
1
CS
while the expected answer:
2
SC
However, the program was correct in my pc (I use Dev-C++). I tried to resubmit the same code but with other option "MS C++" and it worked.
So, can somebody explain to me why this code didn't worked with "GNU C++ 4.6"?

gnu c++, ms c++

KrK
15 лет назад
4

Комментарии (4)

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unprost

15 лет назад, скрыть # |

← Rev. 2 →

It's optimization's problem. I've Compiled your code localy with GCC 4.6 without -Ox flag, and the result is correct, but with -Ox result is wrong

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RodionGork

15 лет назад, скрыть # ^ |

← Rev. 4 →

UPD: I bored myself for a hour with your source.

You just have array index out of bounds in the line 32. G++ gives from1[-1] different than MSVC for this specific occasion. Max works incorrectly (because you are comparing with quasi-random value).

Study to debug your programs yourself. Or use Java as I do... ;-)

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KrK	15 лет назад, скрыть # ^ \| 0 Oh, my silly mistake :) I didn't expect that. Thank you for your work. It is clear now. → Ответить

RodionGork

15 лет назад, скрыть # |

← Rev. 2 →

By the way I could not reproduce this behavior on my local machine so you can see my submissions with debug outputs to get what I mean more clearer. Especially 599091.

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