Roasbeef

from math import ceil

# Write a function called numPizzas, that takes the number of people present,
# the number of slices in a pizza, and the time of day, and returns the
# number of pizzas to buy (as a whole integer).
#
# Spec:
#   Signature: int numPizzas(int numPeople, int slicesPerPizza, int time)
#   Time is an int on 24-hour clock (0-23), e.g. 8 = 8am, 14 = 2pm
#   11 = 11am 11pm = 23