UVA13175 Children to the top

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5086 [PDF](https://uva.onlinejudge.org/external/131/p13175.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13175/a1f7db15da09b6da037fed6d52f40212f40b17f8.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13175/872c0219ef06881382667690269984ce5b741a8e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13175/fc2d4d67b5ebcae10a2fa2b1afaa6cee512c8734.png)