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#include <bits/stdc++.h>
using namespace std;
template <class AC>
void r(AC &x) {
  x = 0;
  int f = 0;
  char ch = getchar();
  while (ch < '0' || ch > '9') {
    f |= (ch == '-');
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9') {
    x = (x << 1) + (x << 3) + (ch ^ 48);
    ch = getchar();
  }
  x = f ? -x : x;
  return;
}
int m, ans, sum, a[1005] = {1, 0, 0, 0, 1, 0, 1, 0, 2, 1, 1, 2, 0, 1, 0, 0};
int main() {
  r(m);
  if (!m) puts("1");
  while (m) sum = m % 16, ans += a[sum], m /= 16;
  cout << ans << endl;
  return 0;
}
