120510 has clearly been using AI to cheat in various contests. His submissions are clearly from ChatGPT:
https://mirror.codeforces.com/contest/2120/submission/325453878
https://mirror.codeforces.com/contest/2129/submission/331847344
Yesterday, he submitted and got WA 4 times on problem B, and then he deleted his entire template to copy ChatGPT's code:
We need to get rid of dirty AI cheaters like this to keep codeforces clean.
