UVA11692 Rain Fall

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=78&page=show_problem&problem=2739 [PDF](https://uva.onlinejudge.org/external/116/p11692.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11692/51de010456176c2a761e5371c9d5f82fbeb49e30.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11692/5112c3eefec7cbb691947cbffffc21a2c2a59547.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11692/743ebd9bf647464e2119fe6fadf9f5e43e2dcfbb.png)