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;
int main() {
  int input, sum = 0;
  cin >> input;
  stringstream s;
  s << hex << input;
  string str;
  s >> str;
  for (int i = 0; i < str.size(); i++) {
    if (str[i] == '0') sum++;
    if (str[i] == '4') sum++;
    if (str[i] == '6') sum++;
    if (str[i] == '8') sum += 2;
    if (str[i] == '9') sum++;
    if (str[i] == 'a') sum++;
    if (str[i] == 'b') sum += 2;
    if (str[i] == 'd') sum++;
  }
  cout << sum << endl;
  return 0;
}
