UVA10674 Tangents

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=18&page=show_problem&problem=1615 [PDF](https://uva.onlinejudge.org/external/106/p10674.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10674/7f15b54e82dd37a7bd798c4e391b55d6ab6df255.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10674/1f99b14b527ba395f5b5226e2218c4541354f721.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10674/acad0417d47f256e4d4fcbce4e48d397a231cd19.png)