UVA11591 Bulb Inside a Grid

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=27&page=show_problem&problem=2638 [PDF](https://uva.onlinejudge.org/external/115/p11591.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11591/61626728d553b56fc33b7926fb69a62f19a57989.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11591/e77e4dc6277cfcb77495258224d21fc96feb0442.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11591/1df8807bdfc1bcfce0a7fd13792a48504eb35ca8.png)