Problem
A 信号灯 1000ms 256MiB Submit
B 展板参观 1000ms 256MiB Submit
C 机器人巡馆 1000ms 256MiB Submit
D 志愿者分组 1000ms 256MiB Submit

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测试

Status: Done
Rule: OI
Problem: 4
Start at: 2026-6-11 16:20
End at: 2026-6-11 17:20
Duration: 1 hour(s)
Host: Hevix
Partic.: 2