UVA10531 Maze Statistics

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1472 [PDF](https://uva.onlinejudge.org/external/105/p10531.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10531/f9fc0a6021b129edfee0936623438b88b604a85b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10531/f1bdae1145d85af80d01d0fce399e33e92bc7a5d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10531/f2345674a115c58d11538b01c4c0f031bfd6f119.png)