Viru and his Unique Series

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Viru is crazy about Fibbonaci series and challenges his friend Kushu that he can solve any question related to the same. Kushu however feels jealous and after thinking for a long time he came up with a problem.He made slight changes in fibbonaci series. By definition, the first two numbers in the Fibonacci sequence are 0 and 1, and each subsequent number is the sum of the previous two. In mathem

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solution.cppC++17

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