Angry Chef

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This morning Chef woke up with an uncontrollable urge to send a text message. But, can you believe it? His new phone just crashed and all of the words are missing from its dictionary! There used to be $N$ words in there, and he certainly doesn't have time to add all of them back right now. His plan is to just choose $K$ distinct words of the $N$ possible words, add them to the phone's dictionary,

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solution.cppC++17

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