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Write a predicate function bool same_elements(vector a, vector b) that checks whether two vectors have the same elements in some order, with the same multiplicities. for example, 1 4 9 16 9 7 4 9 11 and 11 1 4 9 16 9 7 4 9 would be considered identical, but 1 4 9 16 9 7 4 9 11 and 11 11 7 9 16 4 1 would not. you will probably need one or more functions.

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