ysymyth's blog

A confusion about GNU C++ & GNU C++0x

By ysymyth, 11 years ago, In English

Hi everyone! when I try to solve a problem using treap of size 100000, I use something like

struct node { ... node * ch[2]; }

and I keep MLE (see http://mirror.codeforces.com/contest/431/submission/6702556)

... and when I switch the language to C++0x, I got AC ( see http://mirror.codeforces.com/contest/431/submission/6702604)

so I got confused about differences of those two language. Can anyone explain it to me ? Thank you in advance!

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11 years ago, # |
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The difference is in randseed. I've submitted the second code under GNU C++ and it got AC as well.

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    11 years ago, # ^ |
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    But how can rand seed effect the memory ? ...

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      11 years ago, # ^ |
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      Your tree structure depends on randseed. For example, there could be some loop in the tree which lead to stack overflow.

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