using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

class Magatro
{

    static void Main()
    {
        int N = int.Parse(Console.ReadLine());
        int[] w = (new int[N + 1]).Select(s=>-1).ToArray();
        w[1] = 1;
        Queue<int> q = new Queue<int>();
        q.Enqueue(1);
        while (q.Count > 0)
        {
            int e = q.Dequeue();
            if (e + bit(e) <= N&& w[e + bit(e)]==-1)
            {
                w[e + bit(e)] = w[e] + 1;
                q.Enqueue(e + bit(e));
            }
            if (e - bit(e) >= 1&& w[e - bit(e)]==-1)
            {
                w[e - bit(e)] = w[e] + 1;
                q.Enqueue(e - bit(e));
            }
        }
        Console.WriteLine(w[N]);

    }
    static int bit(int n)
    {
        if (n == 0)
        {
            return 0;
        }
        return bit(n / 2) + n % 2;
    }
 
}