Clearance Sale

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Chef's favorite clothing store is holding a clearance sale: for every $2$ t-shirts bought, you receive a third one for free! Chef bought and paid for $X$ t-shirts from the shop. It is guaranteed that $X$ **is even.** How many t-shirts did Chef get from the shop in total? ### Input - The first and only line of input contains a single even integer $X$, the number of t-shirts Chef paid for. ###

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solution.cppC++17

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