The price of a single pizza is 50 dirhams if you by less than 4 pizzas. For example, if you buy 2 pizzas then you will pay 100 dirhams. If you buy 4 to 10 pizzas then each pizza will cost 40 dirhams. If you buy more than 10 pizzas then each pizza will cost 30 dirhams. For example, if you buy 3 pizzas then you will pay 150 dirhams but buying 4 pizzas will cost 160 dirhams. If you buy 8 pizzas then you will pay 320 dirhams. Finally, if you buy 15 pizzas then you will pay 450 dirhams.

Write the algorithm to input the number of pizzas to buy and calculate the total cost. Write both the requirement analysis (input / output) and the algorithm in the answer box

note: using c++