UVA889 Islands

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=830 [PDF](https://uva.onlinejudge.org/external/8/p889.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA889/ebe4461d17e31bbca2ed8f70a92f69d9639601f9.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA889/940d1f8124494ed82de98292b39f68f96f781acb.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA889/c6a1d6908f0d0cd7c9a7dd7e80dc35c6a110b2e1.png)