Problem
A [USACO10JAN] Tea Time S
B 逆序对
C 玉蟾宫
D 无聊的数列

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信竞B班淘汰赛

Status: Done
Rule: OI
Problem: 4
Start at: 2024-3-9 19:30
End at: 2024-3-9 21:30
Duration: 2 hour(s)
Host: lqc
Partic.: 15