#include <iostream>
#include <string>
using namespace std;

int main()
{
	int m, d, e, ans;
	ans = 0;
	for (m = 1; m <= 12; m++) {
		for (d = 0; d <= 2; d++) {
			for (e = 0; e <= 9; e++) {
				if (m == d + e) {
					ans++;
				}
			}
		}
	}
	ans = ans + 1;
	cout << ans << endl;


	return 0;
}