UVA12440 Save the Trees

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3871 [PDF](https://uva.onlinejudge.org/external/124/p12440.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12440/b458e91f9f410fa48f8ce6bff0299e763dd5b61b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12440/a17d809a69fc9e9a734b12459b2b0d74095e75e3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12440/afd35bd14dc18e390c9b3136f67cafc451117c08.png)