Because you need to take n as a parameter instead of using input().

C sounds painful.

console.log(text);

You're printing/logging the answer instead of returning it.

• Random tests aren't random
• Rounding the answer doesn't make sense
• Giving the formula in the description takes away part of the challenge

Return the shorter of the two input parameters, then the longer one, then the shorter one again, concatenated in that order.

It does. Print in Python automatically adds a newline at the end by default. But it also works without a newline, because the author calls .splitlines() on the output anyway.

And it's possible without *args because the author, for whatever reason, always calls the function statically with one argument.

TIL

Now I wonder what the original comment said.

one liners in python aren't always exactly "elegant". but yes

Why?

"XIIX" isn't a valid Roman numeral either way.

Why

constant time with the drawback of absolutely insane memory usage