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

int main()
{
int a;
int b;
int c;

	cin >> a;
	cin >> b;
	cin >> c;

	if( b == '?' )
		cout << "14" << endl;
	else if( b == '2' )
		cout << "4" << endl;
	else if( b == '3' )
		cout << "1" << endl;

	return 0;
}