#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], tmp[10001];
    REP(i, 10001) {
        masu[i] = 10002;
        tmp[i] = 10002;
    }

    int ans = -1;
    masu[1] = 1;
    tmp[1] = 1;

    int move, max = 1, p ,m, flag;
    if (n != 1) {
        while (1) {
            flag = 0;
            rep(i, 1, max+1) {
                if (masu[i] != 10002 && masu[i] != -1) {
                    flag++;
                    move = countbit(i);
                    p = i + move;
                    m = i - move;
                    if (p == n || m == n) {
                        print(masu[i] + 1);
                        exit(0);
                    }

                    if (p < n) if (masu[p] == 10002) {
                            if (max < p) max = p;
                            tmp[p] = masu[i] + 1;
                        }
                    if (m > 0) if (masu[m] == 10002) tmp[m] = masu[i] + 1;

                    tmp[i] = -1;
                }
            }
            if (flag == 0) break;
            rep(i, 1, max+1) masu[i] = tmp[i];
        }
    } else ans = 1;

    print(ans);
    return 0;
}