UVA11017 A Greener World

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=22&page=show_problem&problem=1958 [PDF](https://uva.onlinejudge.org/external/110/p11017.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11017/6c97ce024da8b783041e2065988d854539dfef61.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11017/0d0a3340b5d6d4ab2ae54d3c6b6a7bb16d31eb46.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11017/c331876225cb29601341d938b5e71dd1f3d92303.png)