stock = {
    "tomato soup": 20,
    "cheese": 10,
    "bread": 3,
    "milk": 1,
    "butter": 7,
    "coffee": 8,
    "ice cream": 5,
    "orange juice":  12,
    "bacon": 2,
    "tortilla chips":  4,
    "ramen":  20
}

prices = {
    "tomato soup": 1.85,
    "cheese": 3.99,
    "bread": 2.50,
    "milk": 3.59,
    "butter": 1.99,
    "coffee": 5.99,
    "ice cream": 2.99,
    "orange juice":  2.50,
    "bacon": 5.49,
    "tortilla chips":  3.99,
    "ramen":  0.99
}