#include <fstream>
#include <string>
using namespace std;

ifstream fin("cifra.in");
ofstream fout("cifra.out");

int main()
{
    int n, a, b, l;
    int pos;
    int 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};
    v[0] = 0;
    fin >> n;
    string numar;
    for (int i = 1; i <= n; ++i)
    {

        fin >> numar;
        l = numar.size();
        if(n == 1)
            pos = numar[l - 1] - '0';
        else
            pos = numar[l - 1] - '0' + (numar[l - 2] - '0') * 10;
        fout << v[pos] <<'\n';

    }

}