I found these two cheaters in Yesterday's contest (Codeforces Round #660 (Div. 2)). They are from from the same institute (Jaypee Institute of Information Technology, Noida). They have been doing this in all almost ** every past contests** they both participated. CF authorities should atleast disqualify them from Round #657, as they have gained positive deltas from that round unlike other rounds where they have dropped.
User 1: Agraj Garg agrajgarg
User 2: Vatsal Agarwal Warhead38
Submissions(For CF Round #660):
A: 88462008 by Agraj and 88463088 by Vatsal (Apparently Vatsal has also submitted two absurd solutions to fool the authorities )
B: 88479313 by Agraj and 88478517 by Vatsal
The solutions are similar, in some contests they change variable names but in many they haven't bothered to do that either.
Suspicion:
-**Submission time differ by 1 min**(time to make required changes)
-**Same Number of solved problems** in every contest
-**Same accepted submission with variable change**
PROOF:
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-> 
-> 
Maybe if you present me with 2 similar looking submissions, I cannot definitely say whether they cheated. But it is very very suspicious for 2 users to have such kind of similarities in all the problems in a many contests.
They did the same in the last #658 , #657 , #656 , #654 , #652 and gained big deltas. These are the contest history of Vatsal and Agraj , same performance in common contests.
I know CF team is very busy with more important things but I think pointing out even a single cheater is still worth it. Kindly take appropriate actions MikeMirzayanov to stop such activities happening on a regular basis.
