#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <queue>
#include <climits>
#include <cassert>
using namespace std;

#define REP(i,n) for(int i=0;i<n;i++)
#define INF INT_MAX/3
#define LINF LLONG_MAX/3
#define MP make_pair
#define PB push_back
#define ALL(v) (v).begin(),(v).end()

typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;

int N;
int one[10001];
int used[10001];

int cntone(int n){
    int cnt=0;
    while(n>0){
        if(n%2) cnt++;
        n/=2;
    }
    return cnt;
}

int main(){
    cin >> N;
    REP(i,10001) one[i] = cntone(i);
    REP(i,10001) used[i] = INF;
    used[1] = 1;

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

    while(!que.empty()){
        int p = que.front();
        que.pop();

        if(p+one[p]>=1 and p+one[p]<=N){
            if(used[p+one[p]] > used[p]+1){
                used[p+one[p]] = used[p]+1;
                que.push(p+one[p]);
            }
        }

        if(p-one[p]>=1 and p-one[p]<=N){
            if(used[p-one[p]] > used[p]+1){
                used[p-one[p]] = used[p]+1;
                que.push(p-one[p]);
            }
        }
    }

    if(used[N]==INF) cout << -1 << endl;
    else cout << used[N] << endl;
    return 0;
}