using System;
using System.Text;

namespace yukiCoder
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            var sw = new System.IO.StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
            Console.SetOut(sw);

            int N = int.Parse(Console.ReadLine());

            int[] dN = new int[N];

            for (int i = 0; i < N; i++)
            {
                dN[i] = int.Parse(Console.ReadLine());
            }

            for (int j = 0; j < N; j++)
            {
                StringBuilder result = new StringBuilder("9");

                for (int k = 1; k < dN[j]; k++)
                {
                    result.Append("0");
                }

                Console.WriteLine(result);
            }

            Console.Out.Flush();
        }
    }
}