Library Problem

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Chef stumbled upon a strange library during a treasure hunt contest in Chefland. For his next clue, he had to find a dictionary. The dictionary had a strange property - all the words are of the same length and contain the same set of unique characters. Chef could read the first word in the dictionary. He had the clue for the next stage which was a word and he had to find which $K^{th}$ lexicogr

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L1 Observation

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L4 Pseudo-code

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solution.cppC++17

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