UVA11781 Books

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2881 [PDF](https://uva.onlinejudge.org/external/117/p11781.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11781/09c534a247104834db944bd8db7fdb027f23c31c.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11781/9c953fbbf8e98493dabd233937cefeb10b458c62.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11781/c8a05c475e968761d2b1a2ecf4d43bdd70a566f9.png)