using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, k) = (c[0], c[1]);
        if (k == 1 || k + 1 == n)
        {
            WriteLine("No");
            return;
        }
        else if (k == 2)
        {
            if (n % 2 == 0)
            {
                WriteLine("Yes");
                for (var i = 0; i + 1 < n; ++i)
                {
                    WriteLine($"{i +1} {i + 2} {(i % 2 == 0 ? n / 2 : (- n / 2 - 1))}");
                }
            }
            else WriteLine("No");
            return;
        }
        WriteLine("Yes");
        for (var i = 0; i < k; ++i)
        {
            if (i == k - 2) WriteLine($"{i + 1} {i + 2} {-k}");
            else WriteLine($"{i + 1} {i + 2} 1");
        }
        for (var i = k + 1; i < n; ++i) WriteLine($"{k - 1} {i + 1} 1");
    }
}