UVA12240 Cocircular Points

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3392 [PDF](https://uva.onlinejudge.org/external/122/p12240.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12240/9b2cf3c4b8fcfb0aa7cb2d2d2acec55c61b1ac2d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12240/72ede7c5cb2e829accc5bee83626dce298c0b537.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12240/455fe743995371706c40a1425980cad1214c03ba.png)