The national mathematics competition for college students is divided into two stages: preliminary contest and final contest. The preliminary results are only used to select outstanding players to participate in the finals, and there is no bonus. The final is a more formal competition. Every year, about 100 college students gather in a university to take the exam, and the top players can get a certain bonus. The amount and distribution of bonuses vary according to factors such as year and sponsor, but there will always be bonuses.