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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 a[21];
int main() {
  a[0] = 1;
  a[1] = 0, a[2] = 0, a[3] = 0, a[4] = 1;
  a[5] = 0, a[6] = 1, a[7] = 0, a[8] = 2;
  a[9] = 1, a[10] = 1, a[11] = 2, a[12] = 0;
  a[13] = 1, a[14] = 0, a[15] = 0;
  int n, ans = 0;
  scanf("%d", &n);
  while (n) {
    ans += a[n % 16];
    n /= 16;
  }
  printf("%d\n", ans);
  return 0;
}
