#include <bits/stdc++.h>

using namespace std;

int main()
{
    ifstream cin("cifra.in");
    ofstream cout("cifra.out");

    vector<int> r {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;
    vector<string> v(t);
    for(int i = 0; i < t; i++) {
        cin >> v[i];
    }
    for (int i = 0; i < t; i++) {
        if(v[i].size() == 1) {
            v[i] = "0" + v[i];
        }
        string s = v[i].substr(v[i].size() - 2, v[i].size());
        int n = stoi(s);
        cout << r[n] << '\n';
    }
    return 0;
}