I like to spend a certain amount of time improving my code and trying to decrease the speed or the memory usage. Unfortunately, most of the time, results in terms of speed and memory usage are fairly inconsistent. So it's very difficult to even know if a change is even an improvement.
I can understand that working on making this consistent would be a tremendous task.

But could leetcode systematically publishes a couple of test cases that are very greedy in term of resourses.
For instance: the one test case that is the most heavy in term of performance ond the one that is the most heavy in memory usage.

That way I could take these two tests and run them on my machine, that is supposedly more stable in term of performance.