It makes sense that if a new Song object is instantiated that it would start with no listeners yet.

4000 <= $n <= 9007199254740990

php
could you give me an example of a big test? so i can check
because my solution timed out, but it passedd ok small tests

I cant get the result. if i code return, to get the result
Should return 'Player 1 has a turn': expected undefined to equal 'Player 1 has a turn'

i f i code console.log, doesnt work either

javascript- This example.
[0,9,10],
[8,8,8],
[0,0,18]
"S"
[0,9,10],
[8,8,26]

shouldnt result be
[0,9,10],
[8,8,0]
[0,0,26]
as "S" moves downwards. 8 merges with 18 downwards and stays there. why does it go 26 to the middle?

Each random tests uses a new song.

Hello, in javascript. Random tests are always with the same song as basic tests?
Because im getting some errors, I think maybe is because it is anpther song.

Or listeners must be reset in random tests?

50 for Java's random tests

I assume Python? Max n is 10 in Python.

do anyone know max n in encode and decode?

Have a look at the triangles with short lengths. See what you notice.

Because your code is a mess: sometimes it returns something, and sometimes nothing (if I believe you). You need some debugging: https://docs.codewars.com/training/troubleshooting.
This is a desserved 3 kyu kata, not an easy one.

my code is a mess...but i dont understand why i pass all regular tests i attempt and i get mistakes because result is None...as it is not returning anything...if that is the case and the code is not returning the result...how is possible that regular tests are ok?