#include <iostream>

using namespace std;

int main() {
  int n;
  cin >> n;

  for (int i = 0; i < n; i++) {
    int d;
    cin >> d;
    string ret = "9";
    for (int j = 0; j < d-1; j++)
      ret += "0";
    
    cout << ret << endl;
  }
  
  return 0;
}