Obsessive Compulsive Multiplication

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Harry has just learned Vedic mathematics and is now able to multiply numbers very quickly. But this has got to his head now, and he starts multiplying any two numbers he sees. All his friends are pretty annoyed by this. They decided to feed him with arrays, but not just any arrays. Only such arrays, that if harry starts multiplying any two numbers (a number will not be multiplied by itself, thoug

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solution.cppC++17

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