Skating panel scores

Compute the per-element scores and the total for a figure-skating program, where the judges' extreme marks are trimmed.

A program is a list of elements (jumps, spins, steps). Each element has a weight (how much it is worth) followed by the marks given by the judges' panel. A mark is an integer from 0 to 100, or -1 if that judge did not score the element; -1 entries are ignored entirely, as if the judge were not on the panel for that element.

To score an element:

1. Remove the ignored -1 marks.
2. If five or more marks remain, drop exactly one lowest mark and exactly one highest mark (if the lowest or highest value appears several times, only one copy of each is dropped). With fewer than five marks, nothing is dropped.
3. The element's score is weight × (average of the remaining marks), rounded to the nearest integer, with an exact half rounded up.
4. If no marks remain, the element scores 0.

Each element is rounded on its own; the total is the sum of the rounded element scores.

Input: elements, a list where each entry is [weight, mark, mark, ...].

Output: a list of integers: the score of each element in the given order, followed by the total as the last entry. For an empty program return [0].