using System;

public class Program

{

    public static void Main()

    {

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

        int num = 1;

        for (int row = 1; row <= n; row++)

        {

        for (int col = 1; col <= row; col++)

        {

            if (col > 1) Console.Write(" ");

            Console.Write(num);

            num++;

            if (num > n) break;

        }

        Console.WriteLine();

        if (num > n) break;

        }

    }

}