UVA13227 Katrina's Shadow

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=878&page=show_problem&problem=5150 [PDF](https://uva.onlinejudge.org/external/132/p13227.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13227/5df44fc5c28444ad2b8fd8a3116b8a43ed9e1735.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13227/d70795f1649402019b7f1a91c89c24e2cba259d7.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13227/eb0442f8d24c413831ad139e0230b96a2475c490.png)