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


int main() {
	int N;
	cin >> N;

	int i=1, n=14, ans=1;
	vector<int> c(N+1,0);
	while (i!=N) {
		int cnt=0;
		//cout << bitset<10>(i) << endl;
		for (int bit = 0; bit < n; bit++) {
			if (i & (1 << bit)) {
				cnt++;
			}
		}
		//cout <<"  "<< cnt <<" "<< i+cnt << endl;
		if ((i + cnt) > N) {
			i -= cnt;
		}
		else {
			i += cnt;
		}
		//cout <<" "<< i << endl;
		ans++;
		c[i]++;
		if (c[i] >= 2) {
			cout << -1 << endl;
			return 0;
		}

	}
	cout << ans << endl;
}