UVA459 Graph Connectivity

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=400 [PDF](https://uva.onlinejudge.org/external/4/p459.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA459/0f574b28cede1212196be6bb90df89eeccc9038f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA459/cb6417905d61ab79785a2cae3ebce30bde14cead.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA459/2864d8d58f3098b4f213c086072f31bcc609e22b.png)