UVA11516 WiFi

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=27&page=show_problem&problem=2511 [PDF](https://uva.onlinejudge.org/external/115/p11516.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11516/bc33bc19656877feedb6919172525de693636c2a.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11516/61c5dcee70418395873bbab4c35e16093d0f0e8a.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11516/802654e519bf3a6ea1465af8651eec368c83bcd1.png)