UVA12267 Telephone Network

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3419 [PDF](https://uva.onlinejudge.org/external/122/p12267.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12267/6be994e0f6ebfc4195bcea75d3a6c5bfc827ad22.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12267/c9421a8ecfc28bb11f9195d28a8c07d28ee5424d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12267/f87f75ac2d11bad0a8475e185b3ff50aa72fe17c.png)