It is well known that 1_2_3_4_5_9 is an Indian cheater who sells his code on Instergram for a high price. He also has two alts 10_11_12 and 14_15_16 to do this, which seriously breaks the fairness of Codeforces' rules. It also gives Indians a bad image on Codeforces, whether they cheat or not, which is unfair to the people who don't cheat and get blamed for nothing. I think we should tighten up on "cross-programming language" cheating (many generative AI can now convert code from one language to another), and let's hope Codeforces' anti-cheating system adds this functionality. I also salute MikeMirzayanov for his contribution to Codeforces, I know he has a lot on his plate, but I hope he will look into this massive cheating incident at some point in his spare time, thank you for reading.