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

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

    vector<int> d(N);
    for(int &dd : d) cin >> dd;

    for(int &dd : d){
        cout << 9;
        rep(i, 0, dd-1) cout << 0;
        cout << endl;
    }
 
    return 0;
}