UVA581 Word Search

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=522 [PDF](https://uva.onlinejudge.org/external/5/p581.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA581/74be474d313202843669c0c2495433c992a74888.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA581/b08f516a58421b12c783ce62c28dc5c1551a182e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA581/750d6d315ba4f2fdf02ad00911a151c1e8bc5b78.png)