UVA12438 Farey Polygon

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3869 [PDF](https://uva.onlinejudge.org/external/124/p12438.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12438/3abfdb3f10d812197ab9dcc5851c3967b3b5086b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12438/600e15a295c9adba4958bef9f33bb5d96d12e98f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12438/df1620cf9b2640dbea56635566db3c28b3e4e4fa.png)