UVA10009 All Roads Lead Where?

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=12&page=show_problem&problem=950 [PDF](https://uva.onlinejudge.org/external/100/p10009.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10009/c6aca7a5a9156cf5ae7741d5edb552b21182bca5.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10009/24f97d8e7bf3bae00a6d8f319fe6a3b8504ebd72.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10009/df7849bf4cccd481d12324800b9bc0312ee48df0.png)