Good Fortune

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A boy named flick wants to buy some lottery tickets. so he visits a Fortune Teller to determine his lucky numbers for which he can win. the Fortune Teller tells him to buy Tickets whose number Ends with either $4$,$7$ or $9$.but the lottery counter has tickets of Numbers from Range $L$ to $R$(both Inclusive). so flick has to buy the tickets with numbers between $L$ and $R$ (both inclusive), so he

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solution.cppC++17

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