Hello Codeforces, I'm back :)
Yesterday there was Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) and also cheaters...
Cheaters are tejavojjala, hybrid and shivamg_isc. They are from IIIT Allahabad university, they solved same problems and their solving time is similar. I want to pass problem A and B, because they are easy problems, but I want to note that shivamg_isc copied B from tejavojjala. Names of variables are changed.
UPDATE: Users chill21 and bombie are also cheaters! See their submissions for problem B, bombie's and chill21's. chill21 changed name of function recur to dfs :D How smarty. He did problem B with dfs :D. And bombie wrote
// Never Underestimate Yourself // on top of code, by cheating you are underestimating yourself...
Good luck and contests :) Don't cheat!
Sorry for poor English.