UVA149 Forests

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=85 [PDF](https://uva.onlinejudge.org/external/1/p149.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA149/156e40ef3d34f40ec7376535b898aa2a7fcd0a8a.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA149/d40b283dc35f45b03e22df3da7a8316f7c51f2ae.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA149/13c93c5c19a5bb8c331deeaa01ad01fb51ff53f3.png)