Congratulations for keeping it up and becoming 1 dan!

Thanks

please tell me how you have done it. It doesn't make sense to me at the random test.

Thank you very much :)

doc does it right

What are the missing tests?

What did you learn?

have you been able to solve it?

Same)

Work in progress...

I also memoized.

I'm surprised your solution didn't time out. I tried the same and timed out.

Thanks!

thanks

for real though, I could not have thought of that formula by myself. At least I got it to work.. :]