#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using namespace std;

int main()
{
    int n;
    cin >> n;
    for (int i = 0; i < n; i++){
        int t;
        cin >> t;
        if (t == 1) cout << 10 << endl;
        else cout << fixed << setprecision(0) << (int) 9*pow(10, t-1) << endl;
    }
}