Problem
A [例5.3]冰雹猜想
B [例5.4]校门外的树
C [例5.5]旗鼓相当的对手
D [例5.8]彩票摇奖

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龙凤苑中学4月9日练习赛

Status: Done
Rule: IOI
Problem: 4
Start at: 2026-4-9 15:00
End at: 2026-4-13 15:00
Duration: 96 hour(s)
Host: lfy24
Partic.: 14