import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char[] arr = new char[3];
        for (int i = 0; i < 3; i++) {
            arr[i] = sc.next().charAt(0);
        }
        String ans;
        if (arr[0] == '?') {
            if (arr[1] == '2') {
                ans = "4";
            } else {
                ans = "1";
            }
        } else if (arr[1] == '?') {
            ans = "14";
        } else {
            if (arr[0] == '2') {
                ans = "1";
            } else {
                ans = "4";
            }
        }
       System.out.println(ans);
    }
}