计算图中的公式要求的精度，怎么用C语言的程序设计思想的办法来解决，代码的编写

Input
The first line of input gives the number of cases, T. T test cases follow, each on a separate line. Each test case contains one positive integer n. (1 <= n <= 10^9)

Output
For each input case, you should output the answer in one line.

Sample Input
3
1
2
5