Question: Describe an efficient ordered dictionary structure for storing n elements that have an associated set of k < n keys that come from a total

Describe an efficient ordered dictionary structure for storing n elements that have an associated set of k < n keys that come from a total order. That is, the set of keys is smaller than the number of elements. Your structure should perform all the ordered dictionary operations in O(log k+ s) expected time, where s is the number of elements returned.

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