Bheem and his chocolates

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Bada Bheem who loves chocolate day in VESIT, went to the magical place called Choco-ville. In Choco-ville, there was a shop where infinite number of chocolates were available of K different colors. He wishes to select N chocolates. Also, he wants to have at least 1 chocolate from each color. Since, his selection can be made in many ways. Now he calls you to know how many ways are possible for his

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solution.cppC++17

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