Ready (☆▽☆) OI Start at: 2025-8-14 8:30 3.5 hour(s) Host:

kcs007 26

注意freopen

Status: Ready (☆▽☆)
Rule: OI
Problem: 4
Start at: 2025-8-14 8:30
End at: 2025-8-14 12:00
Duration: 3.5 hour(s)
Host: kcs007
Partic.: 26