So, a question in some super-famous competitive programming exam goes: input will be blah-blah-blah output will be blah-blah-blah. Blah-blah-blah-blah-blah-blah.

Take this to be the input format:

2
1 2 3 4 5 6
5 6 7 8 9 0

How do I parse this? E.g., in Python 3.5, do I ask for input using the str(input()) call or do I use a __main__ function with arguments? Or is it something else?