UVA781 Optimisation

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=9&page=show_problem&problem=722 [PDF](https://uva.onlinejudge.org/external/7/p781.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA781/f254a94c7614ae1d60c9b2b53631fd1e06e27154.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA781/e2746647b1302b4b5f100d7a7f029d1b29e73e3b.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA781/e68b8417596658fcfdf76d529726cc744d46769c.png)