Problem
A 序列重排（arrange）
B 划分（partition）
C 蛋糕（cake）
D 矩阵（matrix）

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[柳泉中学,七中集团,龙凤苑中学]CSP-J复赛前冲刺模拟6

Status: Done
Rule: OI
Problem: 4
Start at: 2025-10-30 15:15
End at: 2025-10-30 18:15
Duration: 3 hour(s)
Host: 管理员Ter (admin)
Partic.: 14