This is a letter on behalf of my roommate and close friend, Not_Visible_For_All, who recently got banned from Codeforces.

I live with him and know him very well. Over the years he has solved over 1900 problems on his own. He has never copied or used any other code and each solution was created by him alone.

It's a sad but true story. In recent contest, he used a code from his second account Baishakh2 and in the same contest submitted the same code on his main account not_visible_for_all during contest time.

He didn't realize that this is against the rules of Codeforces. When he saw there was a problem, he accepted his mistake. He is truly sorry.

The code was 100% his own work. It was a mistake and was not done to cheat or to gain any unfair advantage.

He already sent an official appeal to the Codeforces support. Please reconsider not_visible_for_all. He won't do this again.

Thank you.