UVA12559 找黑圆 Finding Black Circles

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=441&page=show_problem&problem=4004 [PDF](https://uva.onlinejudge.org/external/125/p12559.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12559/d9903181da3b7cf43e9185507b63e3dbfb868577.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12559/b51b58bc0215775409bd91f69f7d646d278e6189.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12559/da70c23ae213bb0f61b6a9d6c662e31dae08513d.png)