Chef And English Exam

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Chef is giving his English exam. Everyone is not good at everything and neither is Chef. Bored of not knowing anything in his exam, Chef decides to play a game to entertain himself. Chef takes $N$ words from his exam and separates them in groups of exactly $K$ words each. There is only one condition, no two words from the same group can start with the same letter. Chef is enjoying making var

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solution.cppC++17

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