#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <array>
#include <map>
#include <stack>
#include <queue>
#include <set>

using namespace std;

int countNumOfOneInBitRepresentation(int i) {

    int count = 0;
    while (i) {
        if (i & 1) {
            count += 1;
        }
        i = i >> 1;
    }
    return count;
}

int main() {

    int N;
    cin >> N;

    queue<int> q;
    q.push(1);

    int m[100005];
    for (int i = 1; i <= N; ++i) {
        m[i] = -1;
    }

    m[1] = 1;
    while (!q.empty()) {

        int x = q.front();
        q.pop();

        if (x == N) {
            break;
        }

        int numOfOneBit = countNumOfOneInBitRepresentation(x);

        int array[] = {x + numOfOneBit, x - numOfOneBit};

        for (int i = 0; i < 2; ++i) {
            if (1 <= array[i] and
                array[i] <= N and
                m[array[i]] == -1) {
                m[array[i]] = m[x] + 1;
                q.push(array[i]);
            }
        }
    }

    cout << m[N] << "\n";

    return 0;
}