#include <bits/stdc++.h>

using namespace std;
void solve() {
    long long n;
    cin >> n;
    n = min(n, 9LL);
    int f = 1;
    vector<int> fac(10, 1);
    for (int i = 1; i <= 9; i++) {
        fac[i] = fac[i - 1] * i;
    }
    int ans = fac[n];
    ans %= 10;
    for (int i = 1; i <= n; i++) {
        ans += fac[n] / fac[i];
        ans %= 10;
    }
    cout << ans << '\n';
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
}