Problem
A 情景剧
B 抽卡
C 修改 01 序列
D 虚树

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

Oh, there is no clarification!

NOIP4测

Status: Done
Rule: OI
Problem: 4
Start at: 2024-11-13 18:00
End at: 2024-11-13 22:00
Duration: 4 hour(s)
Host: root
Partic.: 7