Save the experimental lottery?

The head teacher draws lots, and the school stipulates whether to draw lots with boys or girls. If you draw girls, the teacher draws eight rooms, that is, eight girls live and four boys live. If you smoke with boys and draw eight rooms, it means that boys live in eight rooms and girls live in four rooms. Generally, a class will not have four or eight rooms. In addition to the provincial science experimental class, the provincial science experimental class is a four-person room.