#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long ll;
using namespace std;

int main() {
    int N;
    cin >> N;
    while (N--) {
        int d;
        cin >> d;

        string ans = "9";
        rep(i, d - 1) ans += '0';
        cout << ans << "\n";
    }

    return 0;
}