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The infamous Walter White a.k.a Heisenberg decided to expand his drug empire. But as he is very intelligent he needs to make sure that the other territories are safe to deal with. For that he asked Jesse(his partner) to bring all the shipments of meth (a drug) and weigh them individually. now walter has all the data, he again ask jesse to find the how many pairs (i, j) exist such that 1 ≤ i < j ≤

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solution.cppC++17

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