UVA13079 On the beach!

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4977 [PDF](https://uva.onlinejudge.org/external/130/p13079.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13079/3482be00dd77b80299d70aae14fc4b6c864c1b02.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13079/259db838ad1821c64932e310ee6fa105eb51d159.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13079/6d36ea54279226d7170fd42d8d48d5bda54609a6.png)