UVA920 Sunny Mountains

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=11&page=show_problem&problem=861 [PDF](https://uva.onlinejudge.org/external/9/p920.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA920/ea04657e3058953ac30786a369c3067351a35be3.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA920/5a1a2133dccc0de49efd35f528074c56f0f33006.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA920/55a7d2b6937b93e5b8e8b5de6bab638b9437169a.png)