UVA12269 Lawn mower

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3421 [PDF](https://uva.onlinejudge.org/external/122/p12269.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12269/732991115c089dfc35073bdc6d13e99f89b40859.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12269/cdb6bb70739a00ae13a0804b1107d301cf1e3b42.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12269/ed922787274516901cd658ab08b7604b9569d381.png)