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

int n;

void write(vector<int> &itr, int p, int d)
{
    if (p + d < 1 || p + d > n) return;
    if (itr.at(p + d - 1) == -1) itr.at(p + d - 1) = itr.at(p - 1) + 1;
    if (p + d == n) {
        cout << itr.at(n - 1) << endl;
        exit(0);
    }
}

int main()
{
    cin >> n;
    vector<int> itr(n, -1), q;
    write(itr, 1, 1);
    q.push_back(1);
    for (int i = 0;; i++) {
        int p = q.at(i), d = bitset<32>(p).count();
        write(itr, p + d, i);
        q.push_back(p + d);
        write(itr, p - d, i);
        q.push_back(p - d);
    }
}