using System;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using STR = System.String;
using INT = System.Int64;
using DEC = System.Double;

class Program
{
    public static IO IO = new IO();
    static void Main(string[] args)
    {
        INT n = IO.INT();
        BFSINT<INT> Q = new BFSINT<INT>(n + 1);
        INT o = -1;
        Q.PUSH(1, 1);
        while (Q.SIZE() != 0)
        {
            PAIR<INT, INT> b = Q.POP();
            INT bit = BIT(b.KEY);
            if (b.KEY == n) { o = b.VALUE; break; }
            Q.PUSH(b.KEY - bit, b.VALUE + 1);
            Q.PUSH(b.KEY + bit, b.VALUE + 1);
        }
        IO.WRITE(o);
        IO.FLUSH();
    }
    public static int BIT(INT n)
    {
        int ret = 0;
        for (int i = 0; i < 32; i++)
        {
            if ((1 << i & n) != 0)
            {
                ret++;
            }
        }
        return ret;
    }
}
public class BFSINT<T> : QUEUE<PAIR<INT, T>>
{
    private bool[] f;
    private INT MIN;
    public BFSINT(INT max, INT min = 0) : base(max) { MIN = min; f = new bool[max - min]; }
    public void PUSH(INT key, T value) { PUSH(new PAIR<INT, T>(key, value)); }
    public override void PUSH(PAIR<INT, T> v) { INT k = v.KEY - MIN; if (k >= 0 && k < m - MIN && !f[k]) { f[k] = true; base.PUSH(v); } }
}
public class QUEUE<T>
{
    protected INT m;
    private INT s, e, c;
    private T[] q;
    public QUEUE(INT max) { m = max; q = new T[m]; CLEAR(); }
    public void CLEAR() { e = 0; s = 0; c = 0; }
    public INT SIZE() { return c; }
    public T TOP() { return q[0]; }
    public T POP() { T r = q[s++]; s %= m; c--; return r; }
    public virtual void PUSH(T v) { q[e++] = v; e %= m; c++; }
    public bool EMPTY() { return SIZE() == 0; }
}
public class PAIR<T, U> : IEquatable<PAIR<T, U>> where T : IEquatable<T>
{
    public T KEY;
    public U VALUE;
    public PAIR(T key, U value) { KEY = key; VALUE = value; }
    public bool SAME(PAIR<T, U> b) { return Equals(b); }
    public bool Equals(PAIR<T, U> b) { return KEY.Equals(b.KEY); }
}
public class IO
{
    private const int WMAX = 1000;
    private StringBuilder S = new StringBuilder();
    private T R<T>(Func<string, T> f) { return f(Console.ReadLine()); }
    private T[] R<T>(Func<string, T> f, char c) { return STR().Split(c).Select(f).ToArray(); }
    private T[] R<T>(Func<string, T> f, int l) { T[] r = new T[l]; for (int i = 0; i < l; i++) { r[i] = R(f); } return r; }
    private T[][] R<T>(Func<string, T> f, int l, char c) { T[][] r = new T[l][]; for (int i = 0; i < l; i++) { r[i] = R<T>(f, c); } return r; }
    private void W<T>(Func<T, string> f, T v, bool lf = true) { S.Append(f(v)); if (lf) { S.Append('\n'); } if (S.Length >= WMAX) { FLUSH(); } }
    public STR STR() { return R(s => s); }
    public STR[] STR(char c) { return R(s => s, c); }
    public STR[] STR(int l) { return R(s => s, l); }
    public STR[][] STR(int l, char c) { return R(s => s, l, c); }
    public INT INT() { return R(long.Parse); }
    public INT[] INT(char c) { return R(long.Parse, c); }
    public INT[] INT(int l) { return R(long.Parse, l); }
    public INT[][] INT(int l, char c) { return R(long.Parse, l, c); }
    public DEC DEC() { return R(double.Parse); }
    public DEC[] DEC(char c) { return R(double.Parse, c); }
    public DEC[] DEC(int l) { return R(double.Parse, l); }
    public DEC[][] DEC(int l, char c) { return R(double.Parse, l, c); }
    public void WRITE(object s, bool lf = true) { W(v => v.ToString(), s, lf); }
    public void FLUSH() { Console.Write(S); S.Length = 0; }
}