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liaoyanxu's blog

A bug of interactive problems
By liaoyanxu, 117 minutes ago, In English

In problem https://codeforces.com/contest/1990/problem/E1 and https://codeforces.com/contest/1990/problem/E2 ,I wrote a program and I forget to added"cout.flush()",and the submission judged on test case 4 for ~7min (time limit 4s),so why this program didn't received TLE? Is this a bug or just the wrong of checker?

Submission: https://codeforces.com/contest/1990/submission/271732926

PS:This bug might be used for create CF's long queue,so MikeMirzayanov pls fix it quick XD

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23 minutes ago, # |
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A strange feature of CF (at least on this problem). When your code get ILE, the result might return very slow.

ILE means your code didn't output (correctly) when the checker expects your output.

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    14 minutes ago, # ^ |
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    First of all, ILE is not cout.flush() cause, and CF in the display of ILE before, has been displayed Running, so it is not the problem of return.

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