Calculating DDC freestyle scores

Every judge's base score is calculated the same basic way regardless of the judge type.

Base score

For each judge, their main score, a whole number no lower than 0 and no higher than 10, is collected as the base score called $S_j$ where $j$ is the judge number (1-10).

Surprise bonus

Each judge determines if they want to give a surprise bonus point or not; the number of judges that chose to give a surprise bonus point becomes the surprise bonus score $B_s$.

Mistakes and no mistake bonus

The median¹ number of mistakes counted by 7 of the judges randomly selected before the event (all judges still count mistakes). This number of mistakes is then converted into the mistake deduction ($M$) as follows:

Number of mistakes	Deduction
0	0 points
1	1 points
2	2 points
3	4 points
4	6 points
5	9 points
6	12 points
7 or more	15 points

If the median number of mistakes is 0, the no mistakes bonus score $B_m$ is 5, otherwise it'll be 0.

Result

The result/routine score is the sum of all the judges' base scores $S$ plus the surprise bonus score $B_s$, plus the no mistakes bonus score $B_m$, minus the mistake deduction $M$.

The score will be an integer value between 0 and 115 points.

$$R = \left( \sum_{j = 0}^{10} S_j \right) + B_s + B_m - M$$

Footnotes

1. if the seven scores are ranked from lowest to highest, the median score is the fourth score in order. For example with the scores 1, 2, 3, 4, 5, 6 and 7 the median would be 4. ↩