using System;
 
public class Test
{
	public static void Main()
	{
		int num = 9;
        int mask = num;
        mask |= mask >> 1;
        mask |= mask >> 2;
        mask |= mask >> 4;
        mask |= mask >> 8;
        mask |= mask >> 16;
        int inverse = ~num & mask;
        Console.Out.WriteLine(inverse.ToString());
	}
}