#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  int ways = 0;
  if (n <= 10)
    cout << "0\n";
  else if (n == 20) {
    cout << "15\n";
  } else {
    if (n == 11)
      ways = 1;
    else if (n == 12)
      ways = 1;
    else if (n == 13)
      ways = 1;
    else if (n == 14)
      ways = 1;
    else if (n == 15)
      ways = 1;
    else if (n == 16)
      ways = 1;
    else if (n == 17)
      ways = 1;
    else if (n == 18)
      ways = 1;
    else if (n == 19)
      ways = 1;
    else if (n == 21)
      ways = 1;
    else if (n == 22)
      ways = 0;
    else if (n == 23)
      ways = 0;
    else if (n == 24)
      ways = 0;
    else if (n == 25)
      ways = 0;
    cout << ways * 4 << "\n";
  }
  return 0;
}
