using System;               

public class Exercise11

{

    public static void Main()

    {

        int a,b,c;

        double d, x1,x2;

            Console.Write("\n\n");

            Console.Write("Calculate root of Quadratic Equation :\n");

            Console.Write("---------------------------------");

            Console.Write("\n\n");

        Console.Write("Input a value of a :");

            a =Convert.ToInt32(Console.ReadLine());

        Console.Write("Input a value of b :");

            b =Convert.ToInt32(Console.ReadLine());

        Console.Write("Input a value of c :");

            c =Convert.ToInt32(Console.ReadLine());

        d=b*b-4*a*c;

        if(d==0)

        {

            Console.Write("Booth roots are equal.\n");

            x1=-b/(2.0*a);

            x2=x1;

            Console.Write("First reslut={0}\n",x1);

            Console.Write("Second reslut={0}\n",x2);

        }

        else if(d>0)

        {

            Console.Write("Both roots are real and diff-2\n");

            x1=(-b+Math.Sqrt(d))/(2*a);

            x2=(-b-Math.Sqrt(d))/(2*a);

            Console.Write("First reslut={0}\n",x1);

            Console.Write("Second reslut={0}\n",x2);

        }

        else

            Console.Write("The roots are imaginary;/nNo Solution \n\n");

    }

}