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GUDDU AND HIS DATE

Guddu likes a girl that loves playing with big numbers. She agreed to go on a date with Guddu, but only if he can solve the following problem: So she gives guddu a very large number $N$ (up to $10^6$ digits). and she wants guddu to tell her the number $S$ that is obtained by taking any 2 digits from $N$ and finding their absolute difference and multiplying all the differences of each possible

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solution.cppC++17

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