UVA855 Lunch in Grid City

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=796 [PDF](https://uva.onlinejudge.org/external/8/p855.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA855/bb526a14e78c3253cac47dbf9b4ca3b9e52c6c6f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA855/4b5c12ec795bc041c34a13532c7b5fadc5f0f75f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA855/c2ae7666eacf6bb8bc0882ea292612e2446809b3.png)