Hello Codeforces, I'm back :)

Yesterday there was Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) and also cheaters...

Let's see.

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.

Their solution for problem C: here, here and here. Codes are same, but little things changed...

For problem E hybrid's code is different, but other's code is same (submissions : here, here and here).

Good luck and contests :) Don't cheat!

Sorry for poor English.