UVA12121 You are around me ...

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=243&page=show_problem&problem=3273 [PDF](https://uva.onlinejudge.org/external/121/p12121.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12121/45b5e7647c4a963b8db15971d913f83908cc6b89.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12121/353b7b334aeae4ac78c2479bd14299d85325cb58.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12121/1de50378dd9f10a5cde030a63f1de464784274cb.png)