UVA10263 Railway

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=14&page=show_problem&problem=1204 [PDF](https://uva.onlinejudge.org/external/102/p10263.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10263/d1ed2bc8f6afb94a3375be336aad32cfe85ebff7.png)

Input Format

N/A

Output Format

N/A