using System;

public class qar_havasarum

{

    public static void Main()

{

    double a,b,c,d,x1,x2;

        string s;

        Console.WriteLine("Lucel qar havasarum@\n");

    p:  Console.Write("a=");

        s=Console.ReadLine();

        a=Convert.ToDouble(s);

        Console.Write("b=");

        s=Console.ReadLine();

        b=Convert.ToDouble(s);

        Console.Write("c=");

        s=Console.ReadLine();

        c=Convert.ToDouble(s);

        if(a==0)

        {

            Console.WriteLine("a-i antuylatreli arjeq");

         goto p;

        }

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

        if(d<0)

        Console.WriteLine("Qar havasarumy lucum chuni");

        else

        { 

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

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

            Console.WriteLine("x1={0:#.###}", x1);

            Console.WriteLine("x2={0:#.###}", x2);

        }

    }

}