I have actually already discussed this topic with Mr. Kolbasser. That is, the topic of calculating the rating... now I only play for the classic mode ;)
And Dirty Player, you are completely wrong. If I play well in the last three or four stages, I have a huge chance to win the entire tournament, because after 36 stages, the value of the first stage is equal to 2 to the power of -36 (assuming you have played all of them ;)). Think for yourselves...

Yeah. For example, I currently have 281 points in the rating. I'm not going to participate in the tournament and will only participate in the last three stages. As a result, we have:

(281+1000)/2 = 640.5
(640.5+1000)/2 = 820.25
(820.25+1000)/2 = 910.125

This will be my rating.

Now let's see how it will be for a player who played all or most of the tournaments and has a rating of 1000 before the last one. But he didn't manage to show a super result in it.

(1000+800) = 900

That's it, I'm the leader, the champion, etc., and it turns out that 3 wins at the end are more important than 30 at the beginning.