#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define coutf(f) cout << fixed << setprecision(f)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()

void solve() {
	int d;
	cin >> d;
	if (d == 1) {
		cout << 1 << endl;
		return;
	}
	cout << 9;
	rep(i, d - 1) cout << 0;
	cout << endl;
}

int main() {
	int n;
	cin >> n;
	while (n--) solve();
	return 0;
}