#include <bits/stdc++.h>
using namespace std;

int main() {
	int N;
	cin >> N;
	vector<string> ans; 
	for(int i = 0;i < N;i++){
		int d;
		cin >> d;
		if(d == 1){
			ans.push_back("10");
			continue;
		}
		string a = "9";
		for(int j = 0;j < d - 1;j++)a += "0";
		ans.push_back(a);
	}

	for(auto a:ans)cout << a << endl;
}