kaashmonee's blog

How does CF handle cheating?
By kaashmonee, history, 11 months ago, In English

I just saw in a recent Leetcode contest that there were thousands of submissions during a contest with almost the same code/solution. I can't imagine that's only happening on Leetcode, right? If this is a problem on Codeforces, I'm curious how it's handled? Thanks

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11 months ago, # |
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I don't think it's possible to submit the same code from different accounts without being detected by codeforces anti-cheat. I assume (or at least hope) Leetccode has a similar system and simply waits until the end of the contest to find cheaters, and that's why they are not blocked yet, but I don't know. In any case it's best when annoying cheaters are handled automatically, so there's probably a system for that in every major website.

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    11 months ago, # ^ |
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    Gotcha. Yep I agree but unfortunately, people have been finding ways to evade these automated cheating mechanisms. I was just curious because at least recently, CF seems to be pretty effective at this. It was surprising to see this on Leetcode since that's such a major platform.

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    11 months ago, # ^ |
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    No, leetcode doesn't detect people who submit the same code on 2 different accounts. Only jinlibao's plagiarism checker can detect that and iirc most of them are still rated with no penalty imposed

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11 months ago, # |
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As far as I know, when your code is similar to someone else's code on codeforces you receive a message from the System where they tell you that you are violating the rules and that your account may get blocked if you repeat it. $$$\newline$$$ Also, you won't get a rating on that contest.

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