# A vendor machine can sell 3 products: coke = 35 gp, water = 5 gp , sprite = 15 gp
# User can select beverage by typing it
# User can put coins, only: 1, 2, 5, 10 gp allowed (by typing)
# machine computes how much money is missing
# when Money is enough it delivers the product by printing here + fancy sentence
# it doesn't return change

# A vendor machine can sell 3 products: coke = 35 gp, water = 5 gp , sprite = 15 gp
# User can select beverage by typing it
# User can put coins, only: 1, 2, 5, 10 gp allowed (by typing)
# machine computes how much money is missing
# when Money is enough it delivers the product by printing here + fancy sentence
# it doesn't return change

# A vendor machine can sell 3 products: coke = 35 gp, water = 5 gp , sprite = 15 gp # User can select beverage by typing it # User can put coins, only: 1, 2, 5, 10 gp allowed (by typing) # machine computes how much money is missing # when Money is enough it delivers the product by printing here + fancy sentence # it doesn't return change