Oasis visits a Florist Shop. Shop has N flowers each being of a specific type and every flower costs 1 unit.
You are given type of each flower in an array P = [p1,p2,...,pN]. If he buys a flower of type P’ , then he will get all flowers whose type lies between P’ to P’+4 (both inclusive) for free.
You need to find and print the price Oasis has to pay to buy all flowers.
Detailed explanation ( Input/output format, Notes, Constraints, Images )
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