#include <iostream>
#include <queue>
using namespace std;

int bitCount(int num)
{
    int cnt = 0;
    if (num == 0)
    {
        return 0;
    }
    while (1)
    {
        num &= num - 1;
        cnt++;
        if (num == 0)
        {
            break;
        }
    }
    return cnt;
}

int main()
{
    int N;
    int dist[10010];
    cin >> N;
    for (int i = 0; i <= N; i++)
    {
        dist[i] = -1;
    }
    dist[1] = 1;

    queue<int> q;
    q.push(1);
    while (!q.empty())
    {
        int now = q.front();
        q.pop();
        int bit = bitCount(now);
        if (1 <= (now - bit))
        {
            if (dist[now - bit] < 0)
            {
                dist[now - bit] = dist[now] + 1;
                q.push(now - bit);
            }
        }
        if (now + bit <= N)
        {
            if (dist[now + bit] < 0)
            {
                dist[now + bit] = dist[now] + 1;
                q.push(now + bit);
            }
        }
    }
    cout << dist[N] << endl;
}