UVA10991 Region

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1932 [PDF](https://uva.onlinejudge.org/external/109/p10991.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10991/e8529a521ef3a3a119ac94f30d6c0a5e18a0fd0a.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10991/965b5a30774b86f89fd18e4dae2107105fb19832.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10991/9397f78ee452bec62e2637d753b3f61e9751036c.png)