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

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12314/ac0d5abe5dae5b9c72b58ead4669eec33ccbb449.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12314/a581a7ad23ae97fa044bb1f3e7b315618faaa659.png)