UVA12787 Looking-Glass House

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4652 [PDF](https://uva.onlinejudge.org/external/127/p12787.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12787/8b11d53bbec3b8f52b2a15ece078c7b77af89bfb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12787/30552cc737b6f211a394e126b12011f5a87217b2.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12787/6df8185f01cedd7b7437be32039b3eb98e0d512d.png)