Yes.

go to python 3.8

in if dolphin you divided by 2 the time not the speed.
So you should double the time or need correct the ()

Hi, I have the same error, but I figured out what's the matter. The test shows everything well, but atempt gives the same error

Read the description again, that's the easiest example of one valley.

Every time you go down below 0 level counts as an entry of a valley, and as you go up to 0 level from valley counts as an exit of a valley.

One passed valley is equal one entry and one exit of a valley.

(level 0)      (exit we are again on level 0)
(level-1)\___/

The problem isn't your solution code, it's your tests in the window on the bottom right. Check to see that you didn't change anything there besides the tests. If you can't find anything wrong with the syntax there, then copy your solution, reset the kata, and then paste it back onto the kata. That should probably fix it :)

Yes, as you can see there already are 4,100 completions in Python.

Expect large Inputs!

In Python, n can go up to 9876543210

Yes.

You're using the opposite condition, the opposite of "<=" is ">".

a if b > c else d
d if b <= c else a

Those two are equivalent.

nope:

• "less than 2" <=> n<2
• "less than or equal to 2" <=> n<=2, which is the correct... wording.

I'll update that, thx (edit: done)

It doesn't matter twice, once you finished the kata. Did you forfeit elegibility?

Just continue submitting until it works or refresh the page until it works.