11. 5 Different Numbers

using System;

namespace _11._5_Different_Numbers
{
    class FiveDifferentNumbers
    {
        static void Main(string[] args)
        {
            //You will be given two numbers – a and b. Generate five numbers - n1, n2, n3, n4, n5, for which the following conditions
            //are true: a ≤ n1 < n2 < n3 < n4 < n5 ≤ b. If there is no number in the given interval, which satisfies the conditions –
            //print “No”.
            int first = int.Parse(Console.ReadLine());
            int second = int.Parse(Console.ReadLine());

            if (first + 4 >= second)
            {
                Console.WriteLine("No");
                return;
            }

            for (int i = first; i <= second-4; i++)
            {
                for (int j = first+1; j <= second-3; j++)
                {
                    for (int k = first+2; k <= second-2; k++)
                    {
                        for (int l = first+3; l <=second-1; l++)
                        {
                            for (int m = first+4; m <= second; m++)
                            {
                                if (i<j && j<k && k<l && l<m)
                                {
                                    Console.WriteLine($"{i} {j} {k} {l} {m}");
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}