Problems
Function
Function
Let function f(x) is defined as
Calculate the value of f(x) for a given x.
Input data
Each line contains one double value x (x ≥ 1).
Output data
For each value x print on a separate line the value f(x) with 6 digits after the decimal point.
Examples
Input example #1
1 2.3 2.56 7.123456
Output example #1
10.731685 31.926086 40.762019 3725.231017