UVA11592 Bulb inside a Grid (II)

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=27&page=show_problem&problem=2639 [PDF](https://uva.onlinejudge.org/external/115/p11592.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11592/c17b2680f4b6d954b5d73f4c5066ad1045c3926e.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11592/6f4a82c45d6008fbb9e316829bffd6e42ce835e0.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11592/d5d7f8a9036ff8c7fb9b59123948eec68f95e04a.png)