The quadratic formula can be used to calculate the roots (values of x) for any equation of the format ~ax^2 + bx + c = 0~.
The quadratic formula is as follows: ~\begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}\end{array}~

Determine whether or not a quadratic equation has real roots, then determine if there are multiple. If there are multiple roots, find them.

Input

The first line is the value of ~a~.
The second line is the value of ~b~.
The third line is the value of ~c~.
These values will be between ~-100~ and ~100~. They will not be ~0~.

Output

If there are no real roots, print No real roots. If there is ~1~ real root, print One real root., otherwise print the roots rounded to ~2~ decimal places with each root on a new line with ~x_1~ followed by ~x_2~.

Do not print trailing zeros.

Sample Input 1

1
5
23

Sample Output 1

No real roots.

Sample Input 2

95
101
15

Sample Output 2

-0.18
-0.88