I was wondering about whether the difficulty of problems in Round #999 was announced but found this in problems A-F

Codeforces users can add tags themselves when they solved a problem. What's weird is that problem F2 also got damaged, even though under 50 people have solved it.

I don't know if it's someone mischief or a codeforces bug, but this has to be fixed.

MikeMirzayanov, fyi