hi, I just want to ask why does Codeforces occasionally roll-back your ratings for the last few rounds? I've been through this before and din't mind much. But now I'm just curious what is going on behind the curtains.
Btw: jiangly is back on 4000+ for a few hours :)








They run a deep plagiarism check and thereby update the ratings accordingly.
deep check for plags and AI generated codes if found they just reduce the ratings and skips the solutions