#include<iostream>
#include<queue>

using namespace std;

#define NMAX 10000

int bitcount(int n){
	int c=0;
	while(n!=0){
		if(n%2==1) c++;
		n=n>>1;
	}
	return c;
}

int main(){

	int N;
	int ansmap[NMAX+1];
	queue<int> qi;

	cin>>N;

	for(int i=1;i<=N;i++) ansmap[i]=-1;
	ansmap[1]=1;

	qi.push(1);

	while(!qi.empty()){
		int no=qi.front();
		int ansn=ansmap[no];
		int m=bitcount(no);
		qi.pop();
		if(no-m>=1){
			if(ansmap[no-m]==-1||ansn+1<ansmap[no-m]){
				ansmap[no-m]=ansn+1;
				qi.push(no-m);
			}
		}
		if(no+m<=N){
			if(ansmap[no+m]==-1||ansn+1<ansmap[no+m]){
				ansmap[no+m]=ansn+1;
				qi.push(no+m);
			}
		}
	}
	cout<<ansmap[N]<<endl;
}