using System;
using System.Collections.Generic;
using System.Linq;

namespace No003_ビットすごろく
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            int[] box = Enumerable.Repeat(-1, N + 1).ToArray();
            Queue<int> que = new Queue<int>();

            box[1] = 1;
            que.Enqueue(1);

            while (que.Count != 0)
            {
                int pos = que.Dequeue();
                int bit = BitNumber(pos);

                if (pos - bit > 0 && box[pos - bit] == -1)
                {
                    box[pos - bit] = box[pos] + 1;
                    que.Enqueue(pos - bit);
                }

                if (pos + bit <= N && box[pos + bit] == -1)
                {
                    box[pos + bit] = box[pos] + 1;
                    que.Enqueue(pos + bit);
                }
            }

            Console.WriteLine(box[N]);
        }

        static int BitNumber(int a)
        {
            int temp = 0;

            do
            {
                temp += a % 2;
                a /= 2;
            } while (a > 0);

            return temp;
        }
    }
}