I want to complain that unfair plagiarism was enforced on my account in contest Codeforces Round #825 held on 10.10.2022. I got a message telling me that my solution coincided with a single solution of a person who I have had no contact anywhere on any platform. I had gotten a +43 rating increase and consider it highly disturbing that you enforced a rollback of ratings when I had done the question all by myself. Please look into this immediately.