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  • key-value pairs
  • can't have duplicate keys
pair insert(keyvalue, mapvalue): Adds a new element to the map


  • can have same keys.
  • key-value not unique
  • sorted order
pair<int,int> insert(keyvalue,multimapvalue) – Adds a new element to the multimap
multimap key_comp(): Returns the object that determines how the elements in the multimap are ordered (‘<‘ by default).