#define _USE_MATH_DEFINES

#include <iostream>		//cin, cout
#include <vector>		//vector
#include <algorithm>	//sort,min,max,count
#include <string>		//string,getline, to_string
#include <cstdlib>		//abs(int)
#include <utility>		//swap, pair
#include <deque>		//deque
#include <climits>		//INT_MAX
#include <bitset>		//bitset
#include <cmath>		//sqrt, ceil. M_PI, pow, sin
#include <ios>			//fixed
#include <iomanip>		//setprecision
#include <sstream>		//stringstream
#include <numeric>		//gcd, assumlate
#include <random>		//randam_device
#include <limits>		//numeric_limits
#include <time.h>       //tm

using namespace std;
constexpr int64_t D_MOD = 1000000007;

inline bool JudgeKadomatsu(int a, int b, int c) {
    //門松列か判定する

    if (a == b || b == c || c == a) {
        return false;
    }
    if (b == max({ a, b, c }) || b == min({ a, b, c })) {
        return true;
    }
    else {
        return false;
    }
}

int main() {

    char c;
    vector<int> A;

    for (int i = 0; i < 3; i++) {
        cin >> c;
        if (c == '?') {
            A.push_back(1);
        }
        else {
            A.push_back(c - '0');
        }
    }
    
    if (JudgeKadomatsu(A.at(0), A.at(1), A.at(2))) {
        cout << 1;
    }

    for (int i = 0; i < 3; i++) {
        if (A.at(i) == 1) {
            A.at(i) = 4;
            break;
        }
    }
    if (JudgeKadomatsu(A.at(0), A.at(1), A.at(2))) {
        cout << 4;
    }

    cout << endl;
    
    return 0;

}