using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Plus.Pattern(9));

    }

    public static class Plus

    {

      public static string Pattern(int n)

      {

        return n < 1 ? "" : string.Join("\n",

            Enumerable

            .Range(1, n)

            .Select(i => string.Join("", Enumerable.Repeat(i, i))));

      }

    }

}