UVA784 Maze Exploration

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=9&page=show_problem&problem=725 [PDF](https://uva.onlinejudge.org/external/7/p784.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA784/4b0af8e632abfa430c205616a8fac87ce0d500af.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA784/4bb0fee671b6e744461ccf54b411d37f24653f16.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA784/46713f65a30618d2026e8182d6f7c668661c0c69.png)