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

Because only rows 1 & 2 are reported. Row 0 becomes [0,0,0] after 'S', and the instructions state that the smallest possible array is reported where any row or col has any element > 0.

4000 <= $n <= 9007199254740990

Each random tests uses a new song.

50 for Java's random tests

I assume Python? Max n is 10 in Python.

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.

Since I can't see your solution, I'm going to guess with most common things:

1. Limit your loops, eg. if the current sum is already bigger than desired stop iterating, don't start from 1 or 0 but from previous digit
2. Take anything that is not necessary outside the loops
3. Maybe try rearanging the loops (here point 1 might make a big difference)

You can solve it by writing correct code. Nothing is broken here...

See if this article helps you: https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution

So basically the last test case itself is wrong and hence i can't submit my code. how did you guys submit your code ?

same here, tested on the terminal my code return false, but somehow here it return true

Your first else ain't aligned with any if .

No, there is no nested structure in the second one. That's a number and two strings, see the quotes there?