thanks a ton, super cool :)

See my comment above

Sorry I don't remember. My son explained it to me a couple of years ago. Must be on the internet somewhere.

you got to spill the beans, how does this work?
is this some aproximation thats good till very very far?

thx, is my firts Kata, lets see how it goes

Use of the word "spiral" is unhelpful

mmhm, perhaps :)

Could be another kata...?

Nice kata on dynamic programming as well except for math and combinatorics.

I also think you enjoy generating these gravestones ;)

Yeah. To confuse the devil.

done by author

Ok

still not really ok, the error message is messed up when user mutates the input, just pass a copy of the input to the user; don't forget to republish the kata afterwarts