UVA10362 Trains

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=15&page=show_problem&problem=1303 [PDF](https://uva.onlinejudge.org/external/103/p10362.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10362/2feffa2ad77550c6283236c621017490699a6897.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10362/b644b593f0d27c6b725442f5ded3cc538f78ea45.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10362/6992057f7207a345311d7d66626026ca23807ee2.png)