IceCreams

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Tushar is in a shop with an infinite amount of Ice-creams. He is allowed to select n Ice-creams. There are Ice-creams of k different flavors. From each flavor there are also infinitely many Ice-creams. Tushar wants to have at least one Ice-cream of each flavor, but still there are a lot of possibilities for his selection. Now help him to find how many possibilities are there for his selection. Ass

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solution.cppC++17

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