#include<iostream>
#include<queue>
#include<vector>
using namespace std;

int main(){
  int n;
  cin >> n;

  queue<int> q;
  int dist[n+1];

  int i;
  for(i=1;i<n+1;i++)
    dist[i] = -1;

  q.push(1);
  dist[1] = 1;
  int count = 1;
  while(q.size()){
    int qf = q.front();
    q.pop();

    //speed calculation
    int speed = 0;
    for(i=qf;i>0;i=i>>1){
      speed += i%2;
    }
    
    //push
    int v[] = {1, -1};
    int pos;
    for(i=0;i<2;i++){
      pos = qf + v[i] * speed;
      if( 1<= pos && pos <= n && dist[pos] == -1 ){
	q.push( pos );
	dist[pos] = dist[qf] + 1;
      }
    }
  }

  cout << dist[n] << endl;
  
  return 0;
}