using System;

using System.Diagnostics;

public class Program

{

    public static void Main()

    {

        double a = Convert.ToDouble(Console.ReadLine()), tol = Convert.ToDouble(Console.ReadLine());

            Stopwatch stopwatch = new Stopwatch();

            stopwatch.Start();

            Console.WriteLine("Nach dem Bisektionsverfahren: {0}, {1}", Bisektion(a, tol), stopwatch.Elapsed);

            stopwatch.Restart();

            Console.WriteLine("Nach dem Heronverfahren: {0}, {1}", Heron(a, tol), stopwatch.Elapsed);

    }

    public static double Bisektion(double a, double tol)

    {

        double l = 0, h = a;

        while (h - l > tol)

        {

            if(Math.Pow((h+l) / 2, 2) > a)

            {

                h = (h+l)/2;

            }

            else

            {

                l = (h+l)/2;

            }

        }

        return l;

    }

    public static double Heron(double a, double tol)

    {

        double fläche = a, b = 1;

        while(fläche - b >= tol)

        {

            fläche = 0.5 * (fläche + b);

            b = a / fläche;

        }

        return fläche;

    }

}