Done OI Start at: 2024-10-6 14:00 4 hour(s) Host:

root 35

注意freopen

Status: Done
Rule: OI
Problem: 4
Start at: 2024-10-6 14:00
End at: 2024-10-6 18:00
Duration: 4 hour(s)
Host: root
Partic.: 35