Done OI Start at: 2025-8-12 8:30 3.4 hour(s) Host:

kcs007 31

注意freopen

Status: Done
Rule: OI
Problem: 4
Start at: 2025-8-12 8:30
End at: 2025-8-12 11:51
Duration: 3.4 hour(s)
Host: kcs007
Partic.: 31