UVA12771 Meeting Point of Circles

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4624 [PDF](https://uva.onlinejudge.org/external/127/p12771.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12771/4f4ec65a4c53f00e705605f0adcfd35996f0ec3c.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12771/c74c45ce95910254755837da8c4fb1ea0f69bde4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12771/a98ada5df481419ce812d2478f02050c0dbf12d2.png)