UVA10334 Ray Through Glasses

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=15&page=show_problem&problem=1275 [PDF](https://uva.onlinejudge.org/external/103/p10334.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10334/9ec650f5e89c0eb25cc8e4566baf2a586fa8f79b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10334/a13b7f0a386013b5f73e5e4ebfebc2a7852dea47.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10334/fa35603d6c38f3180cd448dceca7a154cc5615b3.png)