404. Invigorating Race

This week, the Running Man members are given a treat. In order to rejuvenate them from the soon-to-come, scorching heat, they are allowed to eat all kinds of hearty meals. Their mission is to finish a total of 20 servings in 5 hours. However, not all the members can eat every time. Will the members be able to finish 20 servings of food in the given time?