UVA405 Message Routing

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=346 [PDF](https://uva.onlinejudge.org/external/4/p405.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA405/422ebbebf25a1a1a39184b0738581f193b59705f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA405/a0ca8d44463445f08733ad451f82355f8480c651.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA405/024ae38d1d8310717aeeb29aa70a30a57eb610ee.png)