#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    rep(i,n){
        int d;
        cin >> d;
        if(d == 1){
            cout << 10 << endl;
            continue;
        }
        string s = "9";
        rep(j,d-1) s += '0';
        cout << s << endl;
    }
}