Problem
A 计算（calculate）
B 圆柱（cylinder）
C 异或月饼（xor）
D 按摩（massage）

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模拟赛第一场

Status: Done
Rule: OI
Problem: 4
Start at: 2024-8-29 13:30
End at: 2024-8-29 17:21
Duration: 3.9 hour(s)
Host: root
Partic.: 21