Pizza Order Cost Calculation

You are given a fixed menu of pizza toppings with their respective prices. Your task is to calculate the cost breakdown for a customer's pizza order by selecting a list of toppings. For each valid topping in the input, print the topping name and its price. Finally, print the total cost of the selected toppings.

If a selected topping does not exist in the menu, it is ignored. The total cost is defined as \(\text{total} = \sum_{i=1}^{k} p_i\) where \(p_i\) represents the price of each valid topping.

inputFormat

The first line contains an integer \(n\) representing the number of toppings selected. The following \(n\) lines each contain a string representing a topping name.

Note that the available toppings and their prices are fixed as follows:

pepperoni: 2.5
mushrooms: 1.75
onions: 1.0
sausage: 3.0
bacon: 2.75
extra cheese: 1.5
black olives: 1.25
green peppers: 1.5
pineapple: 2.0
spinach: 1.0

outputFormat

For each valid topping (in the order given in the input) that exists in the menu, output one line containing the topping name, a colon, a space, and its price. The last line should display the total cost in the format:

total: 

If none of the selected toppings are valid, only print the total cost as 0. All floating point numbers should be printed as they are (do not enforce a fixed number of decimal places).

## sample

4
pepperoni
mushrooms
extra cheese
pineapple

pepperoni: 2.5
mushrooms: 1.75
extra cheese: 1.5
pineapple: 2.0
total: 7.75

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