#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>
#include <string>
#define REP(i,n) for(int i=0;i<(n);++i)
#define SORT(a) sort((a).begin(),(a).end())
#define PB push_back
using namespace std;
typedef vector<int> VI;
typedef queue<int> QI;

int main(){
  int N;
  cin >> N;
  
  int pc[10001], d[10001];
  REP(i,10001){
    int t = i, s = 0;
    while(t != 0){
      if(t & 1){ ++s; }
      t >>= 1;
    }
    pc[i] = s;
    d[i] = -1;
  }
  QI q;
  q.push(1);
  d[1] = 1;
  while(d[N] == -1 && !q.empty()){
    int c = q.front();
    q.pop();
    int cn = c - pc[c], cp = c + pc[c];
    if(cp <= N && d[cp] == -1){
      d[cp] = d[c] + 1;
      q.push(cp);
    }
    if(cn > 0 && d[cn] == -1){
      d[cn] = d[c] + 1;
      q.push(cn);
    }
  }
  cout << d[N] << endl;
}