using System.Collections.Generic;
using System;

public class Hello
{
    static void Main()
    {
        var T = int.Parse(Console.ReadLine().Trim());
        while (T-- > 0)
        {
            var m = int.Parse(Console.ReadLine().Trim());
            string[] line = Console.ReadLine().Trim().Split(' ');
            var a = Array.ConvertAll(line, int.Parse);
            getAns(m, a);
        }
    }
    static void getAns(int m, int[] a)
    {
        var c = new List<int>();
        for (int i = 0; i < 9; i++)
            for (int j = 0; j < a[i]; j++) c.Add(i + 1);
        var t = long.Parse(string.Join("", c) + new string('0', 9));
        var r = t % m;
        Console.WriteLine(t - r);
    }
}