import java.util.Scanner;

public class Lab03 {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        double a, b, c, discriminant;

        System.out.print("Please enter the value of a,b,c: ");

        a = in.nextDouble();

        b = in.nextDouble();

        c = in.nextDouble();

        discriminant = b * b - 4.0 * a * c;

        if (discriminant < 0) {

            System.out.println("The equation has no real roots.");

        } else if (discriminant == 0.0) {

            System.out.println("The root is " + (-b / (2.0 * a)));

        } else {

            System.out.print("The roots are ");

            System.out.print((-b + Math.pow(discriminant, 0.5)) / (2.0 * a));

            System.out.print(" and ");

            System.out.println((-b - Math.pow(discriminant, 0.5)) / (2.0 * a));
        }
    }
}