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

namespace yukicoder
{
    public class Program
    {
        public static void Main()
        {
            var n = int.Parse(Console.ReadLine());
            var a = new int[n];
            var b = new int[n];
            var c = new Queue<int>();
            for (var i = 0; i < n; i++)
            {
                a[i] = Convert.ToString(i + 1, 2).Count(m => m == '1');
                b[i] = -1;
            }
            c.Enqueue(0);
            b[0] = 1;
            while (c.Count > 0)
            {
                var k = c.Dequeue();
                if (k + a[k] < n && b[k + a[k]] == -1)
                {
                    c.Enqueue(k + a[k]);
                    b[k + a[k]] = b[k] + 1;
                }
                if (k - a[k] >= 0 && b[k - a[k]] == -1)
                {
                    c.Enqueue(k - a[k]);
                    b[k - a[k]] = b[k] + 1;
                }
            }
            Console.WriteLine(b[n - 1]);
        }
    }
}