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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 c, d;
  string a = "";
  char b;
  cin >> c;
  if (c == 0) {
    a = "0";
  } else {
    while (c != 0) {
      d = c % 16;
      if (d < 10) {
        b = d + '0';
      } else {
        b = d + 'A' - 10;
      }
      a = b + a;
      c = c / 16;
    }
  }
  int x;
  int wynik = 0;
  for (int i = 0; i < a.size(); i++) {
    x = a[i] - '0';
    if (x >= 0 && x <= 9) {
      if (x == 4 || x == 6 || x == 9 || x == 0) {
        wynik++;
      } else if (x == 8) {
        wynik += 2;
      }
    } else {
      x = a[i] - 'A';
      if (x == 0 || x == 3) {
        wynik++;
      } else if (x == 1) {
        wynik += 2;
      }
    }
  }
  cout << wynik << endl;
}
