UVA428 Swamp County Roofs

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=369 [PDF](https://uva.onlinejudge.org/external/4/p428.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA428/77c96ca7558f7c8e279c244b30f6199218ff60bb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA428/7d507c4860425715cda5cff9a2937d5d259a8554.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA428/b8e0eeed6fb75484363588fa82db7b9d6fae8f9f.png)