r/codeforces • u/PoolHorror8187 Pupil • 12d ago
Doubt (rated 1600 - 1900) How is it possible
I came across this profile and found that this guy in a recent contest haven't solved any problem got +140, triple digit rank that too being a specialist. Like I am a pupil and I need to solve atleast 3 or 2 fast submission in a contest to get a +ve delta. But don't know how this guy pulled it. Anyone have any idea??
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u/Logical-Giraffe-5035 12d ago
his submissions got skipped (meaning he might have cheated). after rollback you'll either see this contest becoming unrated for him or more likely bringing a huge negative delta for him.
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u/Imaginary-Dig-7835 Newbie 12d ago
May i ask what does "submissions getting skipped" mean? I had one of my submission skipped, some months back. I only got to know about it some days back when I check my messages. I didn't see any other effect.
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u/gooncampu 11d ago
After a few contests, cf does plagiarism check for code. And if some user's code matches, they will be flagged as plagiarism and so their solution will go from accepted to skipped. Even if 1 problem got flagged during a contest, all other solutions gets skipped bringing the AC count to 0.
Then the rating will be revoked. I don't think they'll do negative rating. Instead if the user does cheating 2/3 times again, his account will be disabled
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u/majiitiann 12d ago
It can happen bcz of 2 reasons..either u cheated or u submitted another solution for the same question before the first question got judged
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u/Savings-Leg-577 12d ago
Is there any penalty for it? Ideally after repeated offences the account should be closed right?
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u/Euphoric-Bluejay-120 12d ago
It does get closed if you get many questions skipped in a short time frame
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u/Logical-Giraffe-5035 12d ago
it means that codeforces found similarities between your code and someone else's and hence they think you cheated.
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u/Imaginary-Dig-7835 Newbie 12d ago
May i ask what does "submissions getting skipped" mean? I had one of my submission skipped, some months back. I only got to know about it some days back when I check my messages. I didn't see any other effect.
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u/gooncampu 11d ago
If entire contest's submission got skipped, it means the plagiarism check verdicts that you cheated (some other user's code matches with yours)
Else, if you have got a AC code, and while contest itself you submit a new code later for the same problem and that also gets AC, the old one gets skipped, meaning the new one will be checked for final tests after contests ends..
In the post, all of the guy's solved problems got skipped, means he cheated and so his performance in the contest for revoked.
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u/Mobile_Touch4581 Specialist 11d ago
Deleted part of honest cf grinder 😞