Chef and Words

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Chef likes problems related to learning new languages. He only knows first N letters of English alphabet. Also he explores all M-letter words formed by the characters he knows. Define cost for a given M-letter word S, cost(S) = P1, S1+P2, S2+...+PM, SM, where Pi, j is i, jth entry of matrix P. Sort all the words by descending cost, if costs are equal, sort them lexicographically. You need to find

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solution.cppC++17

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