UVA11528 Switch Grid

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=27&page=show_problem&problem=2523 [PDF](https://uva.onlinejudge.org/external/115/p11528.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11528/5c8b9fd7d6132741ea25a77f1a83d6b358d53cee.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11528/d59c90fc3d7ef76caad7137dd411a75cd4d01dd4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11528/b26be56028ed4480be56db8b73dbe0b5a5f1937c.png)