Multiset is a data structure in Python that allows storing multiple occurrences of elements. It is similar to a set, but unlike a set, it can hold duplicate elements. The elements in a multiset are not ordered, and they can be added or removed efficiently. This data structure is useful in scenarios where we need to keep track of the frequency of elements or perform operations like counting, union, intersection, and difference on multiple sets of elements. Multiset is implemented in the Python collections module as the "Counter" class.
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