I am writing this to just report some cheaters I found in the latest round (#804). aman_cod, bored_kid, amber_100, 1_2_3_4_5_9 are the ones that have cheated.
Have a look at the submissions of problem E from the contest Please look at the code in main void and compare as they have obscured their code to avoid plagiarism detection.
First one to submit : 162806135 Then the second guy submits it in python : 162804059 Then these two submitted the first code as it is but with alot of unnecessary code : 162802356, 162804537
To confirm you could also match their other submission from the contest and will find the similar pattern described above and all four of them solved the 4 questions i.e., [A,B,C,E].
Please MikeMirzayanov and geranazavr555 look into it and ban these guys.
Sorry for posting a blog which does not contribute anything to the community.