#include <bits/stdc++.h>

using namespace std;

void fast_io() {
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
}

void solve() {
    long long m;
    cin >> m;
    vector<int> d(10);
    long long num = 0;
    for (int i = 1; i <= 9; i++) {
        cin >> d[i];
        for (int j = 0; j < d[i]; j++) {
            num = num * 10 + i;
        }
    }
    num *= (long long)1e9;
    num += (m - num % m);
    assert(num % m == 0);
    cout << num << endl;
}
int main() {
    fast_io();
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
}