The topic has become toxic. You're all unhappy about something, arguing with each other. some lack knowledge, others lack money... but, it surprises me that no one who has the knowledge has yet found a way that will reduce any range by 70 percent or more. I'll give you a hint, at a speed of 4 billion per second, 68 are sorted out in a week. I envy your knowledge... but I think you are fools who are limited by your own knowledge...The answer is in front of you, and you are blind...about two years ago, I came across puzzles and the first thought was correct, but after reading your thoughts (on this topic), I was led in the other direction, it was my mistake...and now, I hope, they will help me with the implementation and write the code...I'm sorry for my words...Good day to you...I wish you good luck!