#include <iostream>

#include <string>

using namespace std;
int main() {
	string s1, s2, s3;
	cin >> s1 >> s2 >> s3;
	if (s1 == "?" && s2 == "2") {
		//?23の入力なら4
		cout << "4" << endl;
	}
	else if (s1 == "?" && s2 == "3") {
		//?32  
		cout << "1" << endl;
	}
	else if (s2 == "?" && s1 == "2") {
		//2?3 ->>213 243 
		cout << "14" << endl;
	}
	else if (s2 == "?" && s1 == "3") {
		//3?2	->> 312 342
		cout << "14" << endl;
	}
	else if (s3 == "?" && s1 == "2") {
		//23?
		cout << "1" << endl;
	} 
	else if (s3 == "?" && s1 == "3") {
		//32?  
		cout << "4" << endl;
	}

	return 0;
}