UVA11170 Cos(NA)

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=23&page=show_problem&problem=2111 [PDF](https://uva.onlinejudge.org/external/111/p11170.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11170/233b33a1ad923c6b2822e3df420ff8ec5df2a576.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11170/324445ac8691340d0d2ff042b4bed4d91620635f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11170/6b809295dc3726171d34ee08d44120c98332b2c5.png)