My friend lijinghui has been banned for making too many submissions. This is his appeal.

Request for unban

Dear Codeforces Administrator,

My account, lijinghui, has been banned due to excessive submissions. I am writing to request an unban.

On the afternoon of March 17th, I was working on two difficulty levels of problem 2002F simultaneously. Since I needed to complete both, I submitted code for each. However, due to the large time constant, I had to optimize the execution time and made many attempts, resulting in an excessive number of submissions. I deeply realize my mistake and sincerely apologize for the burden this placed on the Codeforces judging system.

I assure you that I will not engage in such behavior in the future. I hope that you may consider unbanning my account.

Thank you very much.