#include <iostream>
using namespace std;
int count(int n) {
    int i, c = 0, b = 1;
    for (i=0; i<16; i++) {
        b *= 2;
        if (b > n) break;
    }
    while (1) {
        b /= 2;
        if (i-- < 0 || !n) break;
        if (n - b >= 0) {
            n -= b;
            c++;
        }
    }
    return c;
}
int main() {
    int i=1, n, c, way=1, b;
    bool flag = false, loopCheck = false;
    cin >> n;
    while (i <= n) {
        if (i == n) {
            flag = true;
            break;
        }
        c = count(i);
        if (i + c > n) {
            i -= c;
            if (loopCheck) {
                if (i == b) break;
            } else {
                b = i;
                loopCheck = true;
            }
        } else {
            i += c;
        }
        way++;
    }
    if (flag) {
        cout << way << endl;
    } else {
        cout << -1 << endl;
    }
    return 0;
}