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

int popcnt(int n) {
    int cnt = 0;
    while (n) {
        cnt += n & 1;
        n /= 2;
    }
    return cnt;
}

int main() {
    int n;
    cin>>n;
    int dist[n+1];
    fill(dist, dist+n+1, -1);
    dist[1] = 1;
    queue<int> q;
    q.emplace(1);
    while (!q.empty()) {
        int now = q.front();
        q.pop();
        int move = popcnt(now);
        if (1 <= now-move && dist[now-move] == -1) {
            dist[now-move] = dist[now] + 1;
            q.push(now-move);
        }
        if (now+move <= n && dist[now+move] == -1) {
            dist[now+move] = dist[now] + 1;
            q.push(now+move);
        }
    }
    cout << dist[n] << endl;
    return 0;
}