Karthik and Numbers

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Karthik wants to impress his friend Eratosthenes by playing with numbers. The friend has an obsession with prime numbers. E believes a number is interesting if and only if it has a prime number of unique factors (excluding 1 and the number itself). Given Q queries, tell the number of different interesting numbers that Karthik can pick, in the range L to R (including both L and R). Can you help K

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solution.cppC++17

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