11. 5 Different Numbers

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _11_DifferentNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            int b = int.Parse(Console.ReadLine());
            int n = b - a;
            if (n < 4)
            {
                Console.WriteLine("No");
            }
            else
            {
                for (int i = a; i <= b; i++)
                {
                    for (int j = a; j <= b; j++)
                    {
                        for (int k = a; k <= b; k++)
                        {
                            for (int l = a; l <= b; l++)
                            {
                                for (int m = a; m <= b; m++)
                                {
                                    if (i >= j || j >= k || k >= l || l >= m)
                                    {
                                        continue;
                                    }
                                    else
                                    {
                                        int[] array = new int[] { i, j, k, l, m };
                                        Console.Write(string.Join(" ", array));
                                        Console.WriteLine();
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}