Ex-circles

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2831 [PDF](https://uva.onlinejudge.org/external/117/p11731.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11731/29bba11583811341af1a051afdae7511427284b1.png)

输入输出格式

输入格式

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11731/899e9671d23cb4ceee0b86fbab710a375d2cecef.png)

输出格式

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11731/0197d6bc754be6f82a68c7badc3985c778026a40.png)

输入输出样例

输入样例 #1

3 4 5
10 11 12
0 0 0

输出样例 #1

Case 1: 30.00 21.62
Case 2: 211.37 144.73