# include <fstream>
using namespace std;
int main ()
{
    int t, z, i, 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, 0};
    ofstream fout ("cifra.out");       
    ifstream fin ("cifra.in");
    fin>>t;
    fin.get();
    char c, d, e;
    for (i=1;i<=t;i++)
    {
        z=0;
        d='a';
        c=fin.get();
        while (c!='\n' && c!=EOF)
        {
            e=d;
            d=c;
            c=fin.get();
        }
        if (e=='a')
        {
            z=d-'0';
            fout<<v[z]<<endl;
        }
        else
        {
            z=e-'0';
            z=z*10+(d-'0');
            fout<<v[z]<<endl;
        }
    }    
    return 0;
}