UVA438 The Circumference of the Circle

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=379 [PDF](https://uva.onlinejudge.org/external/4/p438.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA438/722d8d7a2ce3ea58fde6745eae1b3a6a9bd60bad.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA438/8dd6e0e7933b09737c6d62ff69b41344730d8db5.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA438/601c3016f58f09554a2cdf0e9bd6084a0ed1e0b1.png)