UVA12668 Attacking rooks

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=602&page=show_problem&problem=4406 [PDF](https://uva.onlinejudge.org/external/126/p12668.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12668/2641d5a27c0c1e0d80a6dcaf18eb080309f07e18.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12668/62373899a30f1cd8bfa8fcb53fca120d3051d4fe.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12668/36f9043fe422ecd3386e73c5d29b7789ff50d627.png)