UVA11685 Moveable maze

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=78&page=show_problem&problem=2732 [PDF](https://uva.onlinejudge.org/external/116/p11685.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11685/7f382170c17fe96ea5696229df9fb30aee87c47c.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11685/8df10f4bb46b849540eaf12f5feccc72aac183aa.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11685/ecf4a0bd2cebd01f1a91f977fe9b89c2378720bf.png)