UVA824 Coast Tracker

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=765 [PDF](https://uva.onlinejudge.org/external/8/p824.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA824/c0fc716a6bfdb0750e2c819a17f410bd6cdb66e8.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA824/25e0bd5caae0970263f97c82b0ee6753b07f91f8.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA824/711f0d04b706e604551d26101b6b6cd7152effe6.png)