UVA12997 Train Station

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=862&page=show_problem&problem=4880 [PDF](https://uva.onlinejudge.org/external/129/p12997.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12997/c99dd357694f9ee96b1ca707c7b180fc512cfb64.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12997/2f5fb08c178a1beda821e9dcebcc7710be5ecbf6.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12997/9401cc381c52a53e1483c87c9738c7dfab37ae55.png)