#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<P,int> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

int n;
vi a;

int main(){
	cin>>n;
	a=vi(n+1,-1);
	a[1]=1;
	queue<P> q;
	q.push({1,1});
	while(!q.empty()){
		P p=q.front();
		q.pop();
		int d=0,x=p.first,y=p.second+1;
		for(int i=0;i<30;i++) if(x&1<<i) d++;
		if(x-d>0&&a[x-d]==-1){
			a[x-d]=y;
			q.push({x-d,y});
		}
		if(x+d<=n&&a[x+d]==-1){
			a[x+d]=y;
			q.push({x+d,y});
		}
	}
	cout<<a[n]<<endl;
}