UVA12757 Gotham’s Rail Track

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4610 [PDF](https://uva.onlinejudge.org/external/127/p12757.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12757/9277b5c44b016e739483ea3d51246fc2b0ac9971.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12757/00173a6c0f4ed97d76f2a8a38bee19e8a722f6a3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12757/65b40e0c38bb7dcddcddd413d9b5a7141e93604f.png)