using System;
using System.Linq;

namespace No3
{
    class Program
    {
        private static int N;
        private static int[] map;

        static void Main(string[] args)
        {
            N = int.Parse(Console.ReadLine());
            map = Enumerable.Repeat(-1, N).ToArray();

            Rec(0, 0);
            Console.Write(map.Last());
        }

        static void Rec(int index, int preventCount)
        {
            if (index < 0) return;
            if (index >= N) return;
            if (map[index] != -1
                && map[index] <= preventCount + 1) return;

            map[index] = preventCount + 1;
            if (index == N - 1) return;

            var bitcount = BitCount(index + 1);

            Rec(index + bitcount, preventCount + 1);
            Rec(index - bitcount, preventCount + 1);
        }

        static int BitCount(int value)
        {
            var count = 0;
            for (var i = 0; i < 32; i++)
            {
                var tmp = 1 << i;
                if ((value & tmp) != 0) count++;
            }

            return count;
        }
    }
}