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

int ret = -1;
int n;
map<int,int> check;

void calc(int cur,int cnt){
    if(cur == n){
        ret = cnt;
    }
    check[cur] = cnt;
    int num = 0;
    int tmp = cur;
    while(tmp > 0){
        if(tmp % 2 == 1)num++;
        tmp /= 2;
    }
    if(cur + num <= n){
        if(check[cur+num] == 0 || check[cur+num] > cnt+1)
        calc(cur+num,cnt+1);
    }
    if(cur - num >= 1){
        if(check[cur-num] == 0 || check[cur-num] > cnt+1)
        calc(cur-num,cnt+1);
    }
}

int main(){
    cin >> n;
    calc(1,1);
    cout << ret << endl;
}