1. Start
2. Display "Enter the number of pizzas: "
3. Input number_of_pizzas
4. Display "Enter the number of slices per pizza: "
5. Input number_of_slices_per_pizza
6. Display "Enter the number of people attending the party: "
7. Input number_of_people
8. total_slices = number_of_pizzas * number_of_slices_per_pizza
9. slices_needed = number_of_people * 3
10. slices_leftover = total_slices - slices_needed
11. Display "You will have", slices_leftover, "slices of pizza leftover."
12. Stop