143165576
 1919020031
 1204252996
 210637432
 724264821
 1741
 619489590
 1199537418
 1075765759
 747976826
 638486017
 58438190
 1285316221
 186925426
 1180540990
 833393692
 1818960378
 2000000000
 0
 1309028227
 514714359
 624205168
 1795248373
 643201595
 1304312649

14 3 3 4 5 2 4 4 2 4 6 4 3 4 5 3 5 4 1 5 3 4 5 5 8
#include <bits/stdc++.h>
using namespace std;
pair<pair<int, int>, int> pii[123456];
int main() {
  long long m, n;
  vector<int> v;
  char s[] = "0123456789ABCDEF";
  cin >> n;
  v.clear();
  if (n == 0) v.push_back(0);
  while (n != 0) {
    v.push_back(n % 16);
    n = n / 16;
  }
  long long ans = 0;
  vector<int>::iterator rit;
  for (rit = v.begin(); rit != v.end(); rit++) {
    if (s[*rit] == '0')
      ans++;
    else if (s[*rit] == '6')
      ans++;
    else if (s[*rit] == '4')
      ans++;
    else if (s[*rit] == '8')
      ans += 2;
    else if (s[*rit] == '9')
      ans++;
    else if (s[*rit] == 'A')
      ans++;
    else if (s[*rit] == 'B')
      ans += 2;
    else if (s[*rit] == 'D')
      ans++;
    else if (s[*rit] == '0')
      ans++;
  }
  cout << ans << endl;
  return 0;
}
