stauntonjr Unfortunately it was marked as a spoiler. It would probably have helped me, and I may still have been stuck, so I don't think it went too far. I had to skip in the end to see how it had been answered.

Thanks for the explanation. I skipped through to see the answers as I was perplexed, and I still didn't understand until I got here.

This is a terrible solution, brain-dead today!

This is an intense solution, were you experimenting?

I agree.

I'm glad you submitted this, I was trying to remember the syntax but got stuck as I was trying to use elif!

I think it would be clearer if you described the i-th number in both cases.

I believe there is a typo. The description of the input array should be: "- the number of a friend who was given a gift by friend number i". At the moment it duplicates the description of the output array.

I did this. With a whole bunch of uneccessary extra code ;-)

Same. Quickest solution, largest quantity of discussion messages!

Great, almost identical as mine (I prefered a <= here)

That's just what I was thinking!

divmod is useful here as it returns // and % in one call.