#include <bits/stdc++.h>
using namespace std;

int main() {
  int count = 0;
  for (int i = 1; i <= 12; i++) {
    for (int j = 0; j <= 2; j++) {
      for (int k = 0; k <= 9; k++) {
        if (i == j + k) count++;
      }
    }
  }
  cout << ++count << endl;
  return 0;
}