I don't see how that is relevant when the problem assumes an arbitrarily large int-type. It's trivial to return the largest possible value (INT_MAX) for any fix

I don't see how that is relevant when the problem assumes an arbitrarily large int-type. It's trivial to return the largest possible value (INT_MAX) for any fixed-size int-type, but a such does not exist. Basically, many posters are missing the point that it's a mathematics challenge, not a C-challenge, which is excusable since it's posted in a C-group.