#include <bits/stdc++.h>
using namespace std;
int n, m, i;
int main() {
  scanf("%d", &n);
  n -= 10;
  int a[20];
  a[0] = 0;
  a[1] = 4;
  a[2] = 4;
  a[3] = 4;
  a[4] = 4;
  a[5] = 4;
  a[6] = 4;
  a[7] = 4;
  a[8] = 4;
  a[9] = 4;
  a[10] = 15;
  a[11] = 4;
  printf("%d\n", (n <= 0 || n > 11 ? 0 : a[n]));
}
