#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <fstream>
#include <queue>
#include <complex>

#define INF 100000007
#define INF_MAX 2147483647
#define LL_MAX 9223372036854775807
#define EPS 1e-10
#define PI acos(-1)
#define LL long long

using namespace std;

#define MAX_N 10001

int N;

int dp[MAX_N];

int main(){

  cin >> N;

  memset(dp, 0, sizeof(dp));

  queue<int> que;
  que.push(1);

  while(que.size()){
    
    int pos = que.front();
    que.pop();

    if(pos == N){
      cout << dp[pos]+1 << endl;
      return 0;
    }

    int ret = 0;
    int tmp = pos;
    while(tmp > 0){
      if(tmp & 1)
	ret++;
      tmp >>= 1;
    }

    if(pos - ret >= 1){
      int nextpos = pos - ret;
      if(dp[nextpos] == 0){
	dp[nextpos] = dp[pos] + 1;
	que.push(nextpos);
      }
    }

    if(pos + ret <= N){
      int nextpos = pos + ret;
      if(dp[nextpos] == 0){
	dp[nextpos] = dp[pos] + 1;
	que.push(nextpos);
      }
    }

  }

  cout << -1 << endl;

  return 0;

}