Hello, Codeforces!
AIM Tech Round 4 (Div. 1) https://mirror.codeforces.com/contest/843 AIM Tech Round 5 (rated, Div. 1 + Div. 2) https://mirror.codeforces.com/contest/1028
I can't start virtual contest I mentioned above.
I didn't know where to report it, so I wrote it on my blog. I apologize if this is not the right place.