UVA11706 Party Night

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2753 [PDF](https://uva.onlinejudge.org/external/117/p11706.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11706/9cba5b886d8b69943ae57f31b02427dcfecf90d7.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11706/d7d410b5d2efc217c8a93d604a4dc2a94ede2219.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11706/dccc325452044a90147fd481c941d8b89deef446.png)