Thank you, i"ll read more about it on internet.

One code was sent after the end of contest.

Hi guys, i work in c++ gnu g++14. I have a problem with task B. All my solutions when tested by me output correct answers but when i submit them, program always output "0 0". Any idea why is this happening ?

I would like to make an appeal on my charge of rewriting. I did not copy other codes. I typed my code without any help, four times I made a mistake until I solved ut. I have nothing to do with paulica. While I was trying to hack others I saw a lot of similar codes, I claim this is just a coincidence and that it was possible for everyone to happen. I had no way to get to his code.