UVA13096 Standard Deviation

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4994 [PDF](https://uva.onlinejudge.org/external/130/p13096.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13096/d8e5953a60905043f61a5f89de1c887f442ee263.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13096/064d87303c0427d1199a12dd4c1eae335f733d8e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13096/e0f4220a5d847de25d9fa661189e432a231283fc.png)