UVA12990 Walk Around The Campsite

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=862&page=show_problem&problem=4873 [PDF](https://uva.onlinejudge.org/external/129/p12990.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12990/6b71d7aacd4685c28588a7083cc260249d65342e.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12990/1de0251d795782fc9fc69634eb19a60ca3e1ea60.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12990/c0015db522e782ffc36ce11457b7192aebb59390.png)