Heisenbug's blog

C output stream is desychronized with itself?
By Heisenbug, history, 9 years ago, In English

In the submission http://codeforces.net/contest/577/submission/12949782 I first printf "YES" and then I printf some numbers. In the output, the numbers came out first and then the "YES". Documentation for std::ios_base::sync_with_stdio generally seems to indicate that bad effects from disabling it should only occur if you use both C- and C++-style I/O. Here I only used C-style output throughout, yet the print statements were mixed. Is this really an allowed behavior for the library?

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9 years ago, # |
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It's still possible for your solution to mix printf and cout e.g. when hub != 0. You printf("YES") and then cout << i << ....

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9 years ago, # |
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Oh... missed that one. Thanks.

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