DONT OPEN!!! TOP SECRET!!!

// WHY DID U OPEN THIS???
// WHY DID U OPEN THIS???
// WHY DID U OPEN THIS???
// WHY DID U OPEN THIS???
// WHY DID U OPEN THIS???
// WHY DID U OPEN THIS???

internal class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("Enter К1");
            int k1 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Enter К2");
            int k2 = Convert.ToInt32(Console.ReadLine());

            var arr = new int[6, 6];
            var random = new Random();
            var list = new List<int>();

            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    arr[i, j] = random.Next(k1 - 5, k2 + 5);
                    Console.Write(arr[i, j] + "\t ");

                    if (j < i)
                    {
                        if (arr[i, j] >= k1 && arr[i, j] <= k2)
                        {
                            list.Add(arr[i, j]);
                        }
                    }
                }
                Console.WriteLine();
            }

            Console.WriteLine();

            var newArr = new int[list.Count];
            list.CopyTo(newArr);
            foreach (var i in newArr)
            {
                Console.Write(i + " ");
            }
        }
    }