#include <iostream>
using namespace std;

#define fastcin {\
    cin.tie(0);\
    ios::sync_with_stdio(false);\
}
#define rep(i, a, b) for(int i = a; i < b; i++)
#define REP(i, a) for(int i = 0; i < a; i++)
#define scan(x) cin >> n;
#define print(x) cout << x << "\n"

int countbit(int n) {
    int count = 0;
    for (int i = 1; i < n + 1; i <<= 1) if (n & i) count++;
    return count;
}

int main() {
    fastcin;
    int n;
    scan(n);

    int masu[10001], turn[500][500];
    REP(i, 10001) masu[i] = 10002;

    int count = 1, locate = 1, branch = 1, ans = -1;
    turn[count][branch] = 1;
    masu[1] = 1;

    int move, p ,m;
    if (n != 1) {
        for (int i = 2; i <= count + 1; i++) {
            for (int j = 1; j <= branch; j++) {
                move = countbit(locate);
                p = locate + move;
                m = locate - move;
                if (p == n || m == n) {
                    ans = i;
                    break;
                }
                if (masu[p] == 10002 && p < n) {
                    locate = p;
                    masu[p] = i;
                    turn[i][j] = p;
                    count++;
                    branch++;
                } else if (masu[m] == 10002 && m > 0) {
                    locate = m;
                    masu[m] = i;
                    turn[i][j] = m;
                    count++;
                    branch++;
                }
            }
        }
    } else ans = 1;

    print(ans);
    return 0;
}