UVA13020 Landscaping

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4908 [PDF](https://uva.onlinejudge.org/external/130/p13020.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13020/70134ff11e3449eabb5f44840e3ba021d47d4a45.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13020/b10b1b17abb49ccd7e153b130ba0628e9fda0941.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13020/620ff8a1232070da7c00135751ac6625a15aaf3a.png)