You can see this guy openaitesting
Except for problem D hacked by me (qsort attack), this guy solved all problems?! Nowadays you should become Tourist to be not affected by cheaters.
(Any way, this guy used unordered_map in problem F, can it be hacked?)








Yesterday's edu is much easier than before. I think a 2200-rating coder can AK it.
The account is used to test OpenAI according to its handle,I don't know if Mike will deem him as a cheater.
Lol no, the owner of that account is just trying to hide themselves. OpenAI has said that they don't test their models publicly.
Most cheater cheat for the sake of vanity, but this one, cheat for fun. Still cheating. Testing AI can be done in vp.
That's because they are Educational. Problems are designed to be classic which AIs are good at.
Though I wouldn't be surprised if some AI model fully solves a real Div.2 contests considering how good they are doing these days.
Codeforces Round 1021 (Div. 2)
It also AKed 1011 (Div. 2)