Value of variable 1#8825
Sign in

Value of variable 1

1 second
128 megabytes
Very easy

Find the value of the variable for a given real value of the variable .

y = x^3 - {5 x^2 \over 7} + 9x - {3 \over x} + 1

Input

One real number .

Output

Print the value of the variable rounded to three decimal places.

Examples

Example 1

Loading
Loading