UVA10545 Maximal Quadrilateral

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1486 [PDF](https://uva.onlinejudge.org/external/105/p10545.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10545/be94af5f4681f16616460c2c77c2cccdfc9b440d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10545/1be042410bfa524700b79af100c1baf3fdf4cd42.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10545/2e136a29e637b680d55c4e6b7681b892fa50e895.png)