UVA10736 Series of PI

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=19&page=show_problem&problem=1677 [PDF](https://uva.onlinejudge.org/external/107/p10736.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10736/62849bd156546306af1ccbc497558e1fe2f75570.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10736/7acc7f05344c1889f03349f9a918633156554d09.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10736/8eaa2a2c03b4cbf40dd7183e8bc0dcfad2e4269b.png)