Usually that's because of the internet. See if your connection is working alright. Continue running the code till it works.

Just remember what you are tracking during the entire observation.

Ball drops and rebounds that are visible to a stationary observer at a certain height.

No.

Yeah man, been down most of the day :(

https://status.codewars.com/

You must return a new list that doesn't contain the minimum element, but not change the original one.

See the sample tests:

	@Test
	public void test1() {
		long[] r = new long[] {55, 89, 1};
		assertArrayEquals(r, ProdFib.productFib(4895));
	}

It's an array of longs.