UVA13267 Half the Polygon

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=878&page=show_problem&problem=5191 [PDF](https://uva.onlinejudge.org/external/132/p13267.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13267/98d8c71ee90f5903002f1ec2f3491c16c4874147.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13267/c94231bf114ac28f309bddbf8ecfe8ad2f6086af.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13267/3190c8414c35a3d3b195658047555fab2cd4097b.png)