using System;
using System.Linq;
using System.Collections.Generic;
class Program {
    static void Main() {
        int n = int.Parse(Console.ReadLine());

        int[] ds = Enumerable.Repeat<int>(-1, n + 1).ToArray();

        Queue<int> q = new Queue<int>();

        ds[1] = 1;
        q.Enqueue(1);

        while (0 < q.Count) {
            int p = q.Dequeue();
            int d = Convert.ToString(p, 2).Count(x => x == '1');
            if (0 < p - d && ds[p - d] == -1) {
                ds[p - d] = ds[p] + 1;
                q.Enqueue(p - d);
            }
            if (p + d <= n && ds[p + d] == -1) {
                ds[p + d] = ds[p] + 1;
                q.Enqueue(p + d);
            }
        }
        Console.WriteLine(ds[n]);
    }
}