using System;

public class Program

{

    public static void Main()

    {

        double a, b, c;

        double delta;

        double pierwiastekDelta;

        double x0, x1, x2;

        double delta2;

        double pierwiastekDelta2;

        double x1tmp;

        double x2tmp;

        Console.WriteLine("Podaj a");

        a = int.Parse(Console.ReadLine());

        Console.WriteLine("Podaj b");

        b = int.Parse(Console.ReadLine());

        Console.WriteLine("Podaj c");

        c = int.Parse(Console.ReadLine());

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

        if (delta>0){

            pierwiastekDelta = Math.Sqrt(delta);

            x1 = Math.Round((-b-pierwiastekDelta)/(2*a), 4);

            x2 = Math.Round((-b+pierwiastekDelta)/(2*a), 4);

            Console.WriteLine("\nX1 = "+x1);

            Console.WriteLine("X2 = "+x2);

        }

        else if (delta < 0){

            delta2 = Math.Abs(delta);

            pierwiastekDelta2 = Math.Sqrt(delta2);

            x1 = Math.Round((-b)/(2*a), 4);

            x1tmp = Math.Round((-pierwiastekDelta2)/(2*a), 4);

            x2 = Math.Round((-b)/(2*a), 4);

            x2tmp = Math.Round(pierwiastekDelta2/(2*a), 4);

            Console.Write("\nX1 = "+x1);

            Console.Write(" - i*"+x1tmp);

            Console.Write("\nX2 = "+x2);

            Console.Write(" + i*"+x2tmp);

        }

        else if (delta == 0) {

            x0 = Math.Round((-b)/(2*a), 4);

            Console.WriteLine("\nX0 = "+x0);

        }

        else{

            Console.WriteLine("Error");

        }

    }

}