The Power of 2

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Sherlock Holmes has helped the London Police to solve a lot of cases and sent a lot of criminals to prison. But now he is getting bored as there is no interesting case to solve. So he decides to play a game with Watson to spend his time. Initially he gives him an array of N numbers A1, A2, A3, … An. Now, he asks Watson to tell him the sum of the squares of all numbers in any subarray from Ai to A

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solution.cppC++17

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