static void Main(string[] args)
        {
		 var n = int.Parse(Console.ReadLine());
		int sum = 1;
        for (int row = 1; row <= n; row++) {
            for (int col = 1; col <= row; col++) {
				Console.Write(sum+ " ");
                sum++;
                if(sum > n) {
                    return;
                }
            }
           Console.WriteLine();
        }
	}