#include <iostream>
#include <string>

using namespace std;

int main() {
	int n;
	cin >> n;
	for (int i = 0; i < n; ++i) {
		int d;
		cin >> d;
		string result;
		if (d == 1) {
			result = "10";
		}
		else {
			result.push_back('9');
			result.append(string(d - 1, '0'));
		}
		cout << result << endl;
	}
	return 0;
}