I am also lost. What is a decimal representation?

I get a TypeError no matter what I do, whether I am testing or attempting the solution.

The problem seems to be the "testing" function defined. I get:

Traceback (most recent call last):
  File "tests.py", line 18, in <module>
    testing(gps(s, x), u)
  File "tests.py", line 6, in testing
    r = fabs(actual - expected)
TypeError: unsupported operand type(s) for -: 'list' and 'int'

The list type just changes to 'None' if I just return nothing. Can anybody help?

I don't understand how to calculate the output.
I know what to return, and the order within the array, but not how to divide it.
What do they mean by "minimum height possible"?
Looking at the examples, the winner (middle) place is sometimes half, but sometimes not.

Help??? :)

Could you explain a little bit what you did here? :p

Awesome, although you didn't even need ''.join()

You can make a copy first and empty out the copy

Yeah, def not a 6 kyu

It isn't just you. I also don't get the second example.

Can you help?

I don't understand the second example.

How are subsequences created?

If ('0123',2) creates 4 substrings ("01,12,23,30"), how come ('0122',2) creates 5 strings ("01,12,22,22,20")???

How does this work exactly?

That's cheating! (smart though)

I use them so long as they are easily understandable (like this one)

Can you explain why is that better?

I understand they should be anonymous. Why is that, though?
And thanks for the reminder

Can you explain what you did here with all the symbols?
Thanks in advance :p