UVA10296 Jogging Trails

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=14&page=show_problem&problem=1237 [PDF](https://uva.onlinejudge.org/external/102/p10296.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10296/d4e90d45009a02df691a2cdfa475635c48d65678.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10296/0f7c073bf0b6a29ab197dc8011aa07f15ba80eae.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10296/04d5c90fea25d3dcc4f6c61486ee32584b8fbd87.png)