#include <bits/stdc++.h>
using namespace std;

/////////////////// メイン ///////////////////

int main () {
  
  //////////////////// 入力 ////////////////////

  int n;
  cin >> n;

  //////////////// 出力変数定義 ////////////////

  int result = 0; 

  //////////////////// 処理 ////////////////////

  vector<int> distances(n+1,-1);
  deque<int> que;

  distances.at(1) = 1;
  que.emplace_back(1);

  while (!que.empty()) {

    int num = que.front();
    que.pop_front();

    int bits = 0;
    int tmp = num;
    while (tmp>0) {
      bits += tmp%2;
      tmp /= 2;
    }

    if (num-bits>0&&distances.at(num-bits)==-1) {
      distances.at(num-bits) = distances.at(num)+1;
      que.emplace_back(num-bits);
    }
    if (num+bits<=n&&distances.at(num+bits)==-1) {
      distances.at(num+bits) = distances.at(num)+1;
      que.emplace_back(num+bits);
    }

  }

  result = distances.back();

  //////////////////// 出力 ////////////////////

  cout << result << endl; 

  //////////////////// 終了 ////////////////////

  return 0;

}