#include <bits/stdc++.h>

using namespace std;
void solve() {
    long long n;
    cin >> n;
    if (n <= 4) {
        vector<int> ans = {0, 2, 5, 6, 5};
        cout << ans[n] << '\n';
        return;
    }
    int ans = 0;
    n = n % 10 + 10;
    for (int i = 1; i <= 5; i++) {
        ans += n;
        ans += n * (n - 1);
        ans += n * (n - 1) * (n - 2);
        ans += n * (n - 1) * (n - 2) * (n - 3);
        ans += n * (n - 1) * (n - 2) * (n - 3) * (n - 4);
    }
    ans += 1;
    ans %= 10;
    cout << ans << endl;
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
}