Ash and Pikachu

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Recently Ash became a pokemon trainer. His first pokemon was Pikachu. Now he is so obsessed with pikachu that he wants to increase its CP (Combat Power) using pikachu candies. He caught the pikachu with CP 'X' and can increase its CP to maximum 'Y'. Now Ash loves maths so he wants to increase pikachu's CP in such a way that after every increase we get CP value which has exactly 'K' unique prime f

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solution.cppC++17

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