#include <fstream>
#include <string>
using namespace std;
ifstream in("cifra.in");
ofstream out("cifra.out");
int l[100] =  {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 , x;

int main()
{
    string n;
    in >> t;
    for(int i=1;i<=t;i++)
    {

        in >> n;
        if(n.length()  == 1)
        x = n[n.length() - 1] - '0';
        else
        x = n[n.length() - 1] - '0' + n[n.length() - 2] - '0';
        out << l[x] << "\n";
    }


    return 0;
}