The Snack Bar Bill

The snack bar's menu maps each snack to its price — total up an order! 🧾

You get the menu as comma-separated item:price pairs, then the order as a list of items (repeats allowed, all on the menu). Print the total cost.

Example:

Input: menu = "cola:3,chips:5,gum:1", order = ["cola", "chips", "cola"] Output: 11

Looking up each ordered item's price and adding it up: cola (3) + chips (5) + cola (3) = 11.