#S44M4T3. 信号汇聚
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ID: 15
Type: Default
File IO: relay
6000ms
1024MiB
Tried: 27
Accepted: 7
Difficulty: 7
Uploaded By:
信号汇聚
请参见 down.zip 中的题面。
由于评测机差异，本题时限有 倍原时限的额外增加。
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