Problem
A 自驾游 (trip)
B 宇宙的卷积
C 舰队的远征
D 军团的阵列线

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0715

Status: Done
Rule: IOI
Problem: 4
Start at: 2025-7-15 14:00
End at: 2025-7-15 18:30
Duration: 4.5 hour(s)
Host: kcs007
Partic.: 32