#include <bits/stdc++.h>
int main() {
  int n, c1 = 10, c2 = 1;
  scanf("%d", &n);
  while (c1 + c2 <= n) c2++;
  c2--;
  (n <= 10) ? printf("%d", 0)
            : (c2 == 10 ? printf("%d", 4 * 4 - 1)
                        : ((c2 > 11) ? printf("%d", 0) : printf("%d", 4)));
  return 0;
}
