#include <fstream>
#include <cstring>

using namespace std;

int s[] = { 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 main()
{
    ifstream fin("cifra.in");
    ofstream fout("cifra.out");
    int t,lg, c = 0;
    char n[105];
    fin >> t;
    fin.get();
    while (t--)
    {
        fin.getline(n, 105);
        lg = strlen(n);
        if  (lg == 1)
        {
            fout << s[n[0] - '0'] << '\n';
        }
        else
        {
            fout << s[(10 * (n[lg - 2] - '0') + n[lg - 1] - '0')] << '\n';
        }
    }

    return 0;
}