i started simulating round 445 8 minutes after i registered , but then when i submitted my solution to problem A i was sent to a bad gateway 504 time-out (servers in maintenance or something). after that it all froze, and i left the simulation but i want to know why did this happen to me
504 Gateway Time-out
nginx/1.12.1
Wow, I didn't know that Codeforces have such real virtual contests.