UVA445 Marvelous Mazes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=386 [PDF](https://uva.onlinejudge.org/external/4/p445.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA445/1b464d11efb8aa21c359d16d890278e2abe5114c.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA445/737cc2c50d686abd76aed959ce3c4757656e2c7f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA445/59ee4ec368da2d8092b407ea022239e1ab4b7220.png)