#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <stdio.h>
#include <cstring>
#include <queue>
#include <stack>
#include <functional>
#include <math.h>
#include <iomanip>
using namespace std;
#define Would
#define you
const int INF = 999999999;
const int MOD = 1e9 + 7;

int main() {
	char a, b, c;
	string ans;
	cin >> a >> b >> c;
	if (b == '?') { ans = "14"; }
	else if (b == '3') { ans = "1"; }
	else { ans = "4"; }
	cout << ans << endl;
}