#include<iostream>
#include<algorithm>
#include <vector>
#include<cmath>
using namespace std;
typedef long long int lont;
int main() {
	vector<char>vec(3);
	for (int ia = 0; ia < 3; ia++) {
		cin >> vec.at(ia);
	}
	if (vec.at(1) == '2') {
		cout << 4 << endl;
	}
	else if (vec.at(1) == '?') {
		cout << 14 << endl;
	}
	else if (vec.at(1) == '3') {
		cout << 1 << endl;
	}
}