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

#define rep(i, s, e) for (int i = s; i < e; i++)
#define M1 = 998244353
#define M2 = 1000000007
#define ll long long

ll power(ll x, int y)
{
    ll res = 1;
    rep(i, 0, y)
    {
        res *= x;
    }
    return res;
}

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

    vector<ll> v(t);
    rep(c, 0, t)
    {
        ll m;
        cin >> m;
        vector<int> d(9);
        rep(i, 0, 9)
        {
            cin >> d[i];
        }
        ll ans = 0;
        rep(i, 0, 9)
        {
            rep(j, 0, d[i])
            {
                ans *= 10;
                ans += i + 1;
            }
        }

        if (ans * power(10, 9) % m == 0)
        {
            v[c] = ans * power(10, 9);
        }
        else
        {
            v[c] = ans * power(10, 9) + (m - (ans * power(10, 9)) % m);
        }
    }

    rep(i, 0, t)
    {
        cout << v[i] << endl;
    }
}