using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp9
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            for (int row = 1; row <= n; row++)
            {
                for (int col = 1; col <= row - 1; col++)
                {
                    Console.Write(row + " ");
                }
                Console.WriteLine(row);
            }
		}
    }
}