UVA10771 Barbarian tribes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=19&page=show_problem&problem=1712 [PDF](https://uva.onlinejudge.org/external/107/p10771.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10771/3ff951959a586f90cc42adb9d56580f62676ec7d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10771/8e17e378572e1e7d9aa2d667cfd2232b29c2af66.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10771/7423a8fbc3d362b34ea37a9a883857c8dae0a461.png)