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

int main() {
	cin.sync_with_stdio(0), cin.tie(0), cout.tie(0);
	char c[10];
	int a[10];
	for (int i = 0; i < 3; i++) {
		cin >> c[i];
		if (c[i] != '?') {
			a[i] = c[i] - '0';
		}
	}
	if (c[0] == '?') {
		if (a[1] < a[2]) {
			cout << 4 << endl;
		} else {
			cout << 1 << endl;
		}
	} else if (c[2] == '?') {
		if (a[0] < a[1]) {
			cout << 1 << endl;
		} else {
			cout << 4 << endl;
		}
	} else {
		cout << 14 << endl;
	}
}