#include<bits/stdc++.h>
using namespace std;
using LL = long long;
using ULL = unsigned long long;
#define rep(i,n) for(int i=0; i<(n); i++)

ULL popcount(ULL X) {
    X = (X & 0x5555) + ((X >> 1) & 0x5555);
    X = (X & 0x3333) + ((X >> 2) & 0x3333);
    X = (X & 0x0f0f) + ((X >> 4) & 0x0f0f);
    X = (X & 0x00ff) + ((X >> 8) & 0x00ff);
    return X;
}

int main() {
    int N; cin >> N;
    int D[10040]; rep(i, N + 40) D[i] = -1;
    D[1] = 1;
    queue<int> Q; Q.push(1);
    while (Q.size()) {
        int p = Q.front(); Q.pop();
        int dist = int(popcount(p));
        if (p + dist <= N) if (D[p + dist] == -1) {
            D[p + dist] = D[p] + 1; Q.push(p + dist);
        }
        if (p - dist >= 1) if (D[p - dist] == -1) {
            D[p - dist] = D[p] + 1; Q.push(p - dist);
        }
    }
    cout << D[N] << endl;

    return 0;
}