My bad :(
You were supposed to only use 1*1*1 cubes

The fun fact is just for fun :)
I don't think these two katas are that similar, but who knows?
Boxlines may give you some insights to start with, but won't entirely point it out

I would say it was rather observation, not imagination

but yeah, thanks for enjoying : )

Looks fine

OK now : )

No, too troublesome :)

Function name and parameters are only a single character long

K, 1000 tests now :)

Seems good to me :)

Thanks for reporting :)

My bad :( I assumed RAND_MAX was 32767. Anyways, thanks for reporting :)

Wdym?

2^16-1 now, thanks for reporting :)

Reduced it down to only 2^16-1. Thanks for reporting :)

Done, the range is now reduced to 10^6

I'll reduce the range now, thanks for reporting :)