using System;

	public static class Extensions
    {
        public static int HighestOneBit(this int number)
        {
            return (int)Math.Pow(2, Convert.ToString(number, 2).Length - 1);
        }
    }
    

public class Test
{
    public static uint highestOneBit(uint i) 
    {
        i |= (i >>  1);
        i |= (i >>  2);
        i |= (i >>  4);
        i |= (i >>  8);
        return i - (i >> 1);
    }

	public static void Main()
	{
		Console.WriteLine();
		Console.WriteLine((-1).ToString("X"));
		Console.WriteLine((Int32.MinValue).HighestOneBit().ToString("X"));
	}
}