How rating of Codeforces users have been stolen

Revision en2, by NextBB, 2020-02-24 10:32:05

By randomly looking at the submissions from the last rounds, I discovered the fact of the cheating by the user Dedalius. The automatic anti-cheat system did not detect this. However, if you carefully look at the submissions of this user, you will find a lot of useless code. Interested in this fact, I found the original author of these codes. It was user TemaTop.

You can see the coinciding time of the submissions, and also below there are the submissions of users.

For example task 1315С: 71714491 71713703

To hide the fact of cheating, Dedalius used useless code.

By comparing the submissions, you can notice the obvious fact of cheating. If you look at more packages, it becomes clear that this is not the first case of cheating on contests!

I want to bring MikeMirzayanov attention to this and take action.

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
ru4 Russian NextBB 2020-02-24 12:10:29 3
ru3 Russian NextBB 2020-02-24 10:35:51 12
en3 English NextBB 2020-02-24 10:34:34 0 (published)
ru2 Russian NextBB 2020-02-24 10:32:28 0 (опубликовано)
en2 English NextBB 2020-02-24 10:32:05 8 Tiny change: 'ss code.\n![ ](/pr' -> 'ss code.\n\n![ ](/pr'
en1 English NextBB 2020-02-24 10:30:30 1213 Initial revision for English translation (saved to drafts)
ru1 Russian NextBB 2020-02-24 10:09:27 1265 Первая редакция (сохранено в черновиках)