#include <bits/stdc++.h>
using namespace std;
vector<long long> v;
queue<long long> q;
priority_queue<long long, vector<long long>, greater<long long> > pq;
long long arr[205];
int main() {
  for (long long i = 2; i <= 9; i++) arr[i] = 4;
  arr[10] = 15;
  arr[1] = 4;
  arr[11] = 4;
  long long n;
  while (cin >> n) {
    if (n > 10)
      cout << arr[n - 10] << endl;
    else
      cout << 0 << endl;
  }
}
