Harmonic Number

In mathematics, the n^th harmonic number is the sum of the reciprocals of the first n natural numbers:

In this problem, you are given n, you have to find H_n.

Input starts with an integer T (≤ 10000), denoting the number of test cases.

Each case starts with a line containing an integer n (1 ≤ n ≤ 10⁸).

For each case, print the case number and the n^th harmonic number. Errors less than 10^-8 will be ignored.

12
1
2
3
4
5
6
7
8
9
90000000
99999999
100000000

1
1.5
1.8333333333
2.0833333333
2.2833333333
2.450
2.5928571429
2.7178571429
2.8289682540
18.8925358988
18.9978964039
18.9978964139