The first three players (i.e., groups) receive some extra points to be added to the mark obtained in the lab mark. Concretely, the first group receives two (over ten) extra points, the second group one and a half points and the third group one point. These numbers have the advantage that they have an equilibrated influence between 10 and 20% of the lab mark, i.e., they are an incentive. Besides, the groups that do not obtain any of the first three positions at the tournament do not suffer any type of penalty nor negative influence in their marks.