#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;
const short sum[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};
main()
{
    ifstream f1("cifra.in");
    ofstream f2("cifra.out");
    string n;
    int i, t, k;
    f1 >> t;
    for (i = 0; i <= t; i++)
    {
        stringstream buf;
        getline(f1,n);
        if (n.length() == 1)
        {
            buf << n;
            buf >> k;
            f2 << sum[k] << "\n";
        }
        if (n.length() > 1)
        {
            string var;
            var = var + n[n.length()-2] + n[n.length()-1];
            buf << var;
            buf >> k;
            f2 << sum[k] << "\n";
        }
    }
}