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() {
  long int decnum, rem, quot;
  int i = 1, j, temp;
  cin >> decnum;
  quot = decnum;
  stringstream ss;
  ss << std::hex << decnum;
  string hexdecnum(ss.str());
  int x = 0;
  for (int p = 0; p < hexdecnum.length(); p++) {
    if (hexdecnum[p] == '0')
      x += 1;
    else if (hexdecnum[p] == '4')
      x += 1;
    else if (hexdecnum[p] == '6')
      x += 1;
    else if (hexdecnum[p] == '8')
      x += 2;
    else if (hexdecnum[p] == '9')
      x += 1;
    else if (hexdecnum[p] == 'a')
      x += 1;
    else if (hexdecnum[p] == 'b')
      x += 2;
    else if (hexdecnum[p] == 'd')
      x += 1;
  }
  cout << x << endl;
  return 0;
}
