Belal and his interesting Equation

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Belal is a great math lover. He used to solve math problems to quench his thirst. He got stuck in solving the following problem. Given an equation X1 + X2 + ... + XN = K . and an array of N numbers a1,a2,...,aN. The task is to find the number of whole number solutions satisfying the given equation such that Xi >= ai for all i (19 + 7. Input - The first line of the input consist of two integers N

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solution.cppC++17

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