using System;

public class Program

{

    public static void Main()

    {int a,b,c,delta;

     double x1,x2;

        Console.WriteLine("baraye moadele 3 majhule a,b,c ra vared konid:");

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

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

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

        delta = (b*b)-4*(a*c);

        if (delta >0){

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

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

        Console.WriteLine("jvab haye moadele ; {0},{1}" , x1,x2);}

        else Console.WriteLine("moadele jvb ndard");

     if (delta ==0)

​

      Console.WriteLine("moadele yek javabe{0] ra darad" ,(-b/2*a ));

    }

}