using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace digits
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int count = 1;

            for (int row = 0; row <= n; row++)
            {
                for (int col = 0; col <= row; col++)
                {
                    Console.Write($"{count} ");
                    count++;
                    if (count > n)
                    {
                        break;
                    }
                }

                Console.WriteLine();

            }
        }
    }
}