#include <iostream>

using namespace std;

int main() {
    string color_house_1, color_house_2, color_house_3, color_house_4;
    int number_house_1, number_house_2, number_house_3, number_house_4;
    cin >> color_house_1 >> number_house_1 >> color_house_2 >> number_house_2 >> color_house_3 >> number_house_3 >> color_house_4 >> number_house_4;
    if (((color_house_1 == color_house_4) || (color_house_4 == "?"s)) && ((number_house_1 == number_house_4) || (number_house_4 == -1))) {
        cout << 1 << endl;
    }
    if (((color_house_2 == color_house_4) || (color_house_4 == "?"s)) && ((number_house_2 == number_house_4) || (number_house_4 == -1))) {
        cout << 2 << endl;
    }
    if (((color_house_3 == color_house_4) || (color_house_4 == "?"s)) && ((number_house_3 == number_house_4) || (number_house_4 == -1))) {
        cout << 3 << endl;
    }
    return 0;
}