We can help you only after you post the entire problem. As it reads now, p can represent almost anything.
In the context of the number of people coming to an event and the seating arrangement, the letter "p" does not seem to have a specific meaning or representation. It is possible that it might be a variable used in a mathematical equation or an identifier used for a different purpose. However, based on the given information, "p" does not represent anything relevant to this particular scenario.