Done OI Start at: 2025-8-9 8:30 3.5 hour(s) Host:

kcs007 61

OI赛制，注意freopen

T3数据范围有更新，请注意查看

题解现在不用点，你也点不开

Status: Done
Rule: OI
Problem: 4
Start at: 2025-8-9 8:30
End at: 2025-8-9 12:00
Duration: 3.5 hour(s)
Host: kcs007
Partic.: 61