Hello programmers ! I think Codeforces authority should do something about identifying cheaters during contests. In today’s Div 4 contest I saw some of the contestant’s solutions to various problems (Specially D and F) after the contests . But surprisingly their solution is nearly the same, the logic and syntax also. I observed some of them modify other’s solutions by changing variable names, adding unnecessary comments, adding unnecessary functions etc. in this regards codeforces authority should implement the plagiarism check mechanism otherwise it is quite disappointing that someone who cheat on contests gain high rank rather than the trustworthy and ethical users. Thank You.