UVA11049 Basic wall maze

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=22&page=show_problem&problem=1990 [PDF](https://uva.onlinejudge.org/external/110/p11049.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11049/d7e694d19b554653953365fec977070a7ef0eeed.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11049/8340767fc09cbcaf3d8db823be56c0400306b5cc.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11049/b6f99298ad9bb3cb828a380609b53b73ba5e0bc8.png)