Pizza Plus promises delivery within 30 minutes by drone, but this becomes a problem on nights when demand is high. Suppose that around closing time, three final orders come in simultaneously, and you want to minimize how far your drone - which can carry up to three pizzas at a time - has to fly in order to deliver them. Otherwise, a pizza could arrive late - and the order will be free! Here are the locations of the houses and the pizza place (where avenues and streets are all equally spaced, in "blocks", and resemble a coordinate