UVA10316 Airline Hub

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=15&page=show_problem&problem=1257 [PDF](https://uva.onlinejudge.org/external/103/p10316.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10316/cb6f728d6bc7263ff4474be05b0192c80647c93f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10316/80b8f76d30646a39e507cfc8562a43e260305123.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10316/906f2e1e733bda0af7f302d09b5273d8ab815d95.png)