system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: how does the Olympic gymnastics scoring system work?
gpt
Gymnast decides on a routine and submits it to the A panel.

The A panel scores the routine with a 
 set of rules.  Every legal move has a difficulty class and is assigned a specific point value.  A routine may include a move several times, but it only counts once in this part.  The second part is doing multiple moves in succession.  There's a set number of points available for connecting moves together.  There are special moves called elements that must be present in every routine (each event has different elements).  The panel then comes to a consensus for the value of the routine.

The B panel scores the performance.  Their scores start at 10.  Every fault that occurs has an amount that gets deducted.  Wrong foot position might be a 0.1 penalty.  Skipping a move in the routine is a 1.0 penalty.  Everything other error has other specific deductions.  Then the subjective dislike of the artistry is deducted.  It is theoretically possible to have a negative score.

The B panel drops the high and the low scores.  The rest are averaged.  The two panel scores are then added together.