Problem
A 前 K 名的平均数
B [NOIP2007 普及组] 奖学金
C 木材加工
D 学生分组

According to the contest rules, you cannot view your submission details at current.

'

Aaron测试

Status: Done
Rule: Ledo
Problem: 4
Start at: 2026-7-8 13:30
End at: 2026-7-8 15:30
Duration: 2 hour(s)
Host: jack
Partic.: 3