# include <fstream>
using namespace std;
int main ()
{
    int i, v[]={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");
    int t, z, j;
    char ss[105];       
    ifstream fin ("cifra.in");
    fin>>t;
    fin.get();
    for (i=1;i<=t;i++)
    {
        z=0;
        fin.getline(ss, 101);
        j=strlen(ss)-1;
        if (j>0) z=ss[j-1]-'0';
        z=z*10+(ss[j]-'0');
        fout<<v[z-1]<<endl;
    }    
    return 0;
}