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

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>

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

  rep(i, N) {
    int d;
    cin >> d;

    if (d == 1) {
      cout << "10" << endl;
      continue;
    }

    cout << "9";
    rep(i, d-1) {
      cout << "0";
    }
    cout << endl;
  }

}