Quadratic equation

Description:

Input:

The only line of input contains integers A, B and C ( - 1000 ≤ A, B, C ≤ 1000, A ≠ 0), separated by spaces.

Output:

Output the roots of the equation in increasing order. If the equation has a single root of multiplicity 2, output it once. The root is considered to be correct if its absolute or relative error does not exceed 10^- 4.

Sample Input:

1 -2 1

Sample Output:

1

Sample Input:

1 0 -1

Sample Output:

-1 1

Sample Input:

2 -3 1

Sample Output:

0.5 1