UVA12068 Harmonic Mean

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=242&page=show_problem&problem=3220 [PDF](https://uva.onlinejudge.org/external/120/p12068.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12068/0ffbb0ae26c8f9c46d1f043e7b5db95f7cdfd731.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12068/d57ca51e04eed74e7aad9515acbaa4a4944c2131.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12068/5ede2eb895a9ce13c01495abbc62ad282f8aecc1.png)