Блог пользователя CP_Sucks

Автор CP_Sucks, история, 5 лет назад, По-английски

I got RE with submitting in c++17 and same code AC in c++14. Why is it so can someone help.

C++14 https://mirror.codeforces.com/contest/1282/submission/67691308

C++17 https://mirror.codeforces.com/contest/1282/submission/67690121

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5 лет назад, # |
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Maybe because you didn't use cout.flush()

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5 лет назад, # |
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Just change query[len-1] with query.back()

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You're getting this verdict because you didn't exit immediately after printing the first query, which was the solution in that case. After that, your program will be reading from a closed stream, meaning that, for example resb will be uninitialized. The fact you passed this test case in c++14 was just pure luck.

Oh, and please put parentheses around n in your ffor macro, otherwise you'll get burned one day.