using System;

public class Program

{

    public static void Main()

    {

        for (float i = 0; i < 1025; i+=0.25f)

        {

            if (IsPowerOfTwo(i))

            {

                Console.WriteLine(i);

            }

        }

    }

    public static bool IsPowerOfTwo(float val)

    {

        if (val == 1) return true;

        if (val == 0 || val % 2 != 0) return false;

        var currentValue = val;

        while (currentValue % 2 == 0)

        {

            if (currentValue == 2) return true;

            currentValue /= 2;

        }

        return false;

    }

}