#include <iostream>
#include <iomanip>

#include <algorithm>
#include <math.h>

#include <string>
#include <list>
/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define P(p) cout<<(p)<<endl;
/////////
typedef long long LL;
typedef long double LD;
/////////
using namespace::std;
/////////
int pop(int n){
	int ans = n;
	ans = ((ans & 0xaaaa)>>1) +(ans&0x5555);
	ans = ((ans & 0xcccc)>>2) +(ans&0x3333);
	ans = ((ans & 0xf0f0)>>4) +(ans&0x0f0f);
	ans = ((ans & 0xff00)>>8) +(ans&0x00ff);
	return ans;
}
int N;
int m[10001];
int d[10001];

int main(void){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed;//
    //cout << setprecision(6);//

	cin>>N;
	
	rep(i,N+1){
		m[i] = pop(i);
		d[i] = -1;
	}
	
	int ans = -1;
	int c[10001];
	int num  = 0;
	int left;
	int temp;
	c[num] = 1;
	d[c[num]] = 1;
	left = 1;

	for(;num<left;)
	{
		if(c[num] == N){
			ans = d[c[num]];
			break;
		}
		temp = c[num] + m[c[num]];
		if( 1 <= temp && temp <= N){
			if(d[temp] == -1)
			{
				c[left] = temp;
				++left;
				d[temp] = d[c[num]] + 1;
			}
		}
		temp = c[num] - m[c[num]];
		if( 1 <= temp && temp <= N){
			if(d[temp] == -1)
			{
				c[left] = temp;
				++left;
				d[temp] = d[c[num]] + 1;
			}
		}
		++num;
	}

	P(ans);

    return 0;
}