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

int main()
{
	int c[3];
	cin>>c[1]>>c[2]>>c[3];
	if(c[2]==3){cout<<1<<endl;}
	if(c[2]==2){cout<<4<<endl;}
	if(c[2]=='?'){cout<<14<<endl;}

	fflush(stdin);
	getchar();

}