using System;
using System.Collections.Generic;

namespace BitSugorokuCS
{
    class Program
    {
        static int CountBit(int x)
        {
            int ret = 0;

            while (x >0)
            {
                x &= x - 1;
                ++ret;
            }

            return ret;
        }

        static int BitSugoroku(int N)
        {
            int[] D = new int[N+1];
            D[1] = 1;
            Queue<int> q = new Queue<int>();
            q.Enqueue(1);
            while(q.Count > 0)
            {
                int v_now = q.Dequeue();
                if(v_now == N)
                {
                    return D[v_now];
                }
                int bitcount = CountBit(v_now);
                int v_rear = v_now + bitcount;
                int v_front = v_now - bitcount;
                if(0< v_rear && v_rear <=N && D[v_rear] == 0)
                {
                    q.Enqueue(v_rear);
                    D[v_rear] = D[v_now] + 1;

                }
                if (0 < v_front && v_front <= N && D[v_front] == 0)
                {
                    q.Enqueue(v_front);
                    D[v_front] = D[v_now] + 1;
                }
            }
            return -1;
        }

        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            Console.WriteLine(BitSugoroku(N));
        }
    }
}