Chhota Bheem and GCD

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Chotta Bheem loves to solve math problems but he has to go on a date with his crush Rajkumari Indumati so he wants you to solve the problem for him. You are given a number n.Consider all integer from 1 to n. Among all pair of distinct integers in the given range find the maximum value of GCD of integers in pair. Find maximum value of gcd(a,b) for all a,b in(1,n).(gcd=Greatest common divisor). ###

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solution.cppC++17

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