XOR less than OR

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Mushak Raaj was once travelling in a city with Ganpati Bappa when he met a student who was solving some question and seemed stuck with the question. Mushak Raaj being a genius and erudite person wanted to help the student. So, the student told him that this was a coding problem he was stuck with, and he was given an array $A$ of size $N$. The aim was to find the number of pairs of indices $i$ and

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solution.cppC++17

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