#include<iostream>
using namespace std;
int Ichizero(int ten) {
	int two = 0;
	while (ten > 0) {
		if (ten % 2 == 1) two++;
		ten /= 2;
	}
	return two;
}
int main() {
	int nowplace = 1;
	int move;
	int cnt = 1;
	int N;
	cin >> N;
	while (true) {
		//cout << nowplace << endl;
		cnt++;
		move = Ichizero(nowplace);
		if (nowplace + move <= N) {
			if (nowplace - move + Ichizero(nowplace - move) == N) {
				nowplace -= move;
			}
			else {
				nowplace += move;
			}
		}
		else if (nowplace - move >= 1) {
			nowplace -= move;
		}
		else {
			cnt = -1;
			break;
		}
		if (cnt >= 100000) {
			cnt = -1;
			break;
		}
		if (nowplace == N) {
			break;
		}
	}
	cout << cnt << endl;
}