UVA13125 Water troubles

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5036 [PDF](https://uva.onlinejudge.org/external/131/p13125.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13125/9b7b27fc7d900155b549bdea90fcefc045cf8290.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13125/766ea128225c78040f44c2796f0bf1cd3a9ef84b.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13125/19e0cae6ddaaae496241430ba713c8effe1e2deb.png)