#include <fstream>

using namespace std;

ifstream fin("cifra.in");
ofstream fout("cifra.out");

const int v[] = {0, 1, 5, 2, 8, 3, 9, 2, 8, 7, 7, 8, 4, 7, 3, 8, 4, 1, 5, 4, 4, 5, 9, 6, 2, 7, 3, 6, 2, 1, 1, 2, 8, 1, 7, 2, 8, 5, 9, 8, 8, 9, 3, 0, 6, 1, 7, 0, 6, 5, 5, 6, 2, 5, 1, 6, 2, 9, 3, 2, 2, 3, 7, 4, 0, 5, 1, 4, 0, 9, 9, 0, 6, 9, 5, 0, 6, 3, 7, 6, 6, 7, 1, 8, 4, 9, 5, 8, 4, 3, 3, 4, 0, 3, 9, 4, 0, 7, 1, 0};

int t;
string s;

int main() {
    fin >> t;
    while(t > 0) {
        fin >> s;
        int n = s.length(), poz = 0;
        switch(n) {
            case 1:
                poz = s[n - 1] - '0';
                break;
            default:
                poz = s[n - 1] - '0' + (s[n - 2] - '0') * 10;
                break;
        }
        fout << v[poz] << "\n";
        t--;
    }
    fin.close();
    return 0;
}