Range Queries

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You are given an array(1-based indexing) A of size N. You have to answer K queries on it. For each query, you will be given a range L-R. You have to find the sum of product of every pair Ai and Aj in the given range for every i ≠ j. As the answer can be large, output your answer modulo 109+7. Input The first line of the input contains an integer T denoting the number of test cases. The followin

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solution.cppC++17

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