UVA12314 清洁机器人 The Cleaning Robot

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=278&page=show_problem&problem=3736 [PDF](https://uva.onlinejudge.org/external/123/p12314.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12314/294fff42ea55b6ce9ccc2c52f15d68eec8371a84.png)

Input Format

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Output Format

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