#include <bits/stdc++.h>
using namespace std;

using lint = long long;

int main() {
    int t;
    cin >> t;
    while (t--) {
        lint m;
        cin >> m;
        vector<lint> d(10);
        for (int i = 1; i <= 9; i++) {
            cin >> d[i];
        }
        if (accumulate(d.begin(), d.end(), 0LL) == 0LL) {
            cout << m << endl;
            continue;
        }
        lint ans = 0;
        lint ten = 1;
        for (lint i = 1; i <= 9; i++) {
            while (d[i]--) {
                ans += ten * i;
                ten *= 10LL;
            }
        }
        lint digit = to_string(m - 1).size();
        ans *= powl(10LL, digit);
        lint r = ans % m;
        if (r > 0) {
            ans += m - r;
        }
        cout << ans << endl;
    }
}