ok, i haven't thought about that, without the mystery variable, i can't get the same answers.
I did all kinds of calculations without the mystery variable and it gave nothing
it took my head this code,
I have a question about z--, it's the same as z-1 ???
excuse me for my english, i'm not english, i'm using google translate
I know how to make a copy paste but it didn't work, I had to type the code by hand
I do calculations on paper to arrive at the same answers when you click on run but I can't
I give you the output, what interests me is to understand each line of code to arrive at the same results