Leaderboard

I had to move my cursor to show that the video did not hang, because nothing happened for about 30 seconds. And this is only for 10,000 elements. If I put 100,000 elements, then the waiting time would increase not 10, but 100 times. And in the new version - only 10 times. So the new version allows you to save 100,000 elements in about 2 seconds, while the old one does the same in about 40 minutes.