#include <algorithm>
#include <array>
#include <cmath>
#include <cstdio>
#include <deque>
#include <iomanip>
#include <iostream>
#include <numeric>
#include <optional>
#include <queue>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <vector>

using namespace std;

int main() {
    int32_t n;
    cin >> n;
    vector<int32_t> ds(n);
    for (auto &&d : ds) {
        cin >> d;
    }
    for (auto d : ds) {
        if (d == 1) {
            cout << 10 << endl;
            continue;
        }
        cout << 9;
        for (auto i = 0; i < d - 1; ++i) {
            cout << 0;
        }
        cout << endl;
    }
    return 0;
}