#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int bitcount( int a ) {
    
    int ret = 0;
    for ( int i = 0; (1 << i ) <= a; i++ ) {
        if ((1<<i) & a) { ret++; }
    }
    return ret;
}

int main() {
    
    
    int N;
    cin >> N;
    vector< vector<int> > path(N+1);
    vector<int> dist(N+1);
    
    fill( dist.begin(), dist.end(), -1 );
    dist[1] = 1;
    
    for ( int i = 1; i <= N; i++ ) {
        int b = bitcount(i);
        if ( i+b <= N ) { path[i].push_back(i+b); }
        if ( i-b >= 1 ) { path[i].push_back(i-b); }
    }
    
    queue<int> Q;
     for ( int i = 0; i < path[1].size(); i++ ) {         
        Q.push( path[1][i] );
        dist[path[1][i]] = dist[1]+1;
     }
    
    while ( !Q.empty() ) {
        int c = Q.front();
        Q.pop();
        
        if ( c == N ) { break; }
        
        for ( int i = 0; i < path[c].size(); i++ ) {
            if ( dist[path[c][i]] == -1 ) {
                Q.push( path[c][i] );
                dist[path[c][i]] = dist[c]+1;
                // cout << dist[path[c][i]] << endl;
            }
        }
    }
    
    cout << dist[N] << endl;
    
    return 0;
}