Done IOI Start at: 2025-11-22 14:00 3.5 hour(s) Host:

hey_muzili 64

这是一个比赛

记得freopen

Status: Done
Rule: IOI
Problem: 4
Start at: 2025-11-22 14:00
End at: 2025-11-22 17:30
Duration: 3.5 hour(s)
Host: hey_muzili
Partic.: 64