#include <bits/stdc++.h>

using namespace std;

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

int n;
int v[100] = {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};
char s[105];

int main()
{
    int i, sol;
    fin >> n;
    for(i = 1; i <= n; i++)
    {
        fin >> s;
        if(strlen(s) == 1)
            sol = s[strlen(s) - 1] - 48;
        else sol = (s[strlen(s) - 2] - 48) * 10 + s[strlen(s) - 1] - 48;
        fout << v[sol - 1] << "\n";
    }
    fout.close();
    return 0;
}