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

static const int MAX=10010;
static const int INF=1e9;

int N;
int d[MAX];

void bfs(int s){
    for(int i=0;i<=N;i++){
        d[i]=-1;
    }
    queue<int> que;
    que.push(s);
    d[s]=1;
    while(!que.empty()){
        int p=que.front(); que.pop();
        int f=0;
        int q=p;
        while(q){
            if(q%2!=0){
                f++;
            }
            q/=2;
        }
        //cout << f << endl;
        int dx1=p-f;
        int dx2=p+f;
        if(dx1>=1&&d[dx1]==-1){
            d[dx1]=d[p]+1;
            que.push(dx1);
        }
        if(dx2<=N&&d[dx2]==-1){
            d[dx2]=d[p]+1;
            que.push(dx2);
        }
    }
}

int main(){
    cin >> N;
    bfs(1);
    cout << d[N] << endl;
}