#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int bit_count(int a)
{
	int i = 0;
	while(a) {
		i++;
		a &= (a-1);
	}
	return i;
}

int search(int *a, int n)
{
	int b[10001], i, j, cnt = 0;
	memcpy(b, a, n*4+4);
	for( i = 0; i <= n; i++) {
		if(b[i]) {
			int t = bit_count(i);
			if(!b[i+t] || b[i+t] > b[i]+1) {
				b[i+t] = b[i]+1;
				cnt++;
			}
			if(i-t > 0){
				if(!b[i-t] || b[i-t] > b[i]+1) {
					b[i-t] = b[i]+1;
					cnt++;
				}
			}
		}
	}
	memcpy(a, b, n*4+4);
	return cnt;
}

int main(void)
{
	int n, i, a[10001] = {0, 1};
	scanf("%d", &n);
	
	while(i = search(a, n));

	if(!a[n]) {
		printf("-1\n");
	} else {
		printf("%d\n", a[n]);
	}

	return 0;
}