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

int main() {
  int n;
  cin >> n;
  while (n--) {
    int d;
    cin >> d;
    if (d == 1) {
      cout << 10 << '\n';
      continue;
    }
    cout << 9;
    for (int i = 1; i < d; i++) cout << 0;
    cout << '\n';
  }
}