太空站之谜 Mysterious Space Station

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4584 [PDF](https://uva.onlinejudge.org/external/127/p12731.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12731/1a7be9f4af494a95588e92bfdd0c659b6b3311af.png)

输入输出格式

输入格式


输出格式


输入输出样例

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