using System;
using System.Linq;
using System.Collections.Generic;

public class Solution
{
    public static void Main()
    {
        var n = int.Parse(Console.ReadLine());
        var result = 0;

        for (int a = 0; a * 3 < n; a++)
        {
            for (int b = a; a + b + b < n; b++)
            {
                for (int c = b; a + b + c < n; c++)
                {
                    Console.WriteLine($"{a} {b} {c}");
                }
            }
        }
    }
}