edenooo's blog

I was wrongly flagged as a cheater in the last div2 round
By edenooo, history, 3 years ago, In English

Today, I've received system messages that my submissions on problem A and C from last division 2 round (round #738) coincides with someone else, and got all my submissions skipped.

I compete on sublime text, and do not use any online editors such as ideone.

I'm guessing the reason my submissions got flagged is due to how simple solutions to problem A and C are.

These two are the submissions to problem A which the system thinks coincide. 125936660 125936386

Comparing them with the codes from the editorial and jiangly, they're almost similar to our codes. I think most people came up with a similar approach, so these similarities cannot be an evidence that we cheated. Editorial 125934926

It's the same for the problem C. These are the submissions flagged by the system. 125952554 125957871

And these are the codes from the editorial and Maksim1744. We can again notice the similarities on all 4 of these codes. Editorial 125939776

Here are some other reasons I couldn't have been involved in a cheating.

  • The round is unrated for me

  • Even though I solved E at the 69 minutes mark, duchung has no submission on the problem. If he wanted to cheat for his rating, he would have copied my E submission as well.

  • I got AC on problem A at 3 minutes, C at 22 minutes. Meanwhile, duchung got A accepted at 3 minutes and got one WA on C at 23 minutes, into AC at 27 minutes. There weren't enough time for duchung to modify my code and submit.

Therefore, I ask MikeMirzayanov and other codeforces admins to kindly revert the skipped judgement on my submissions.

  • Vote: I like it
  • +172
  • Vote: I do not like it

Comments Comments (4)
| Write comment?
»
3 years ago, # |
  Vote: I like it +176 Vote: I do not like it

Hi, I'm his ICPC teammate, and I can vouch for him that he has no connection to duchung and he has never been involved in any sort of cheating.

→ Reply
  • »
    »
    3 years ago, # ^ |
      Vote: I like it +147 Vote: I do not like it

    As duchung's classmate, I can confirm that he wrote all his code by himself and never attempted to cheat on any of his contests, and I'm sure that this is just because they have similarities in their coding style.

    → Reply
»
3 years ago, # |
← Rev. 2   Vote: I like it +22 Vote: I do not like it

.

→ Reply
»
3 years ago, # |
  Vote: I like it +43 Vote: I do not like it

I can also say that the soln was straightforward and there is a high possibility that they are flagged wrongly.

→ Reply