#include <cstdio>
#include <iostream>
#include <vector>
#include <set>
#include <cmath>
#include <climits>
#include <list>
#include <iomanip>
#include <cstdlib>
#include <fstream>
#include <map>
#include <algorithm>
#include <string>

#define nmax 1700000

using namespace std;

int main() {
    freopen("cifra.in", "r", stdin);
    freopen("cifra.out", "w", stdout);

    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int v[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;
    cin >> t;
    for (int i = 1; i <= t; i++) {
        string s;
        getline(cin, s);
        int l = s.length(), nr;
        if (l == 1)
            nr = s[l - 1] - '0';
        else
            nr = (s[l - 2] - '0') * 10 + s[l - 1] - '0';
        cout << v[nr] << "\n";
    }

    return 0;
}