#include <bits/stdc++.h>
using namespace std;
const int INF = 2000000000;
const double EPS = 1e-9;
int main() {
  const int MAS[] = {0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 15,
                     4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  int n;
  cin >> n;
  if (n - 10 < 0) {
    cout << 0 << endl;
  } else {
    cout << MAS[n - 10] << endl;
  }
  return 0;
}
