| // -*- C++ -*- | 
 | //===----------------------------- map ------------------------------------===// | 
 | // | 
 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | 
 | // See https://llvm.org/LICENSE.txt for license information. | 
 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | 
 | // | 
 | //===----------------------------------------------------------------------===// | 
 |  | 
 | #ifndef _LIBCPP_MAP | 
 | #define _LIBCPP_MAP | 
 |  | 
 | /* | 
 |  | 
 |     map synopsis | 
 |  | 
 | namespace std | 
 | { | 
 |  | 
 | template <class Key, class T, class Compare = less<Key>, | 
 |           class Allocator = allocator<pair<const Key, T>>> | 
 | class map | 
 | { | 
 | public: | 
 |     // types: | 
 |     typedef Key                                      key_type; | 
 |     typedef T                                        mapped_type; | 
 |     typedef pair<const key_type, mapped_type>        value_type; | 
 |     typedef Compare                                  key_compare; | 
 |     typedef Allocator                                allocator_type; | 
 |     typedef typename allocator_type::reference       reference; | 
 |     typedef typename allocator_type::const_reference const_reference; | 
 |     typedef typename allocator_type::pointer         pointer; | 
 |     typedef typename allocator_type::const_pointer   const_pointer; | 
 |     typedef typename allocator_type::size_type       size_type; | 
 |     typedef typename allocator_type::difference_type difference_type; | 
 |  | 
 |     typedef implementation-defined                   iterator; | 
 |     typedef implementation-defined                   const_iterator; | 
 |     typedef std::reverse_iterator<iterator>          reverse_iterator; | 
 |     typedef std::reverse_iterator<const_iterator>    const_reverse_iterator; | 
 |     typedef unspecified                              node_type;              // C++17 | 
 |     typedef INSERT_RETURN_TYPE<iterator, node_type>  insert_return_type;     // C++17 | 
 |  | 
 |     class value_compare | 
 |         : public binary_function<value_type, value_type, bool> | 
 |     { | 
 |         friend class map; | 
 |     protected: | 
 |         key_compare comp; | 
 |  | 
 |         value_compare(key_compare c); | 
 |     public: | 
 |         bool operator()(const value_type& x, const value_type& y) const; | 
 |     }; | 
 |  | 
 |     // construct/copy/destroy: | 
 |     map() | 
 |         noexcept( | 
 |             is_nothrow_default_constructible<allocator_type>::value && | 
 |             is_nothrow_default_constructible<key_compare>::value && | 
 |             is_nothrow_copy_constructible<key_compare>::value); | 
 |     explicit map(const key_compare& comp); | 
 |     map(const key_compare& comp, const allocator_type& a); | 
 |     template <class InputIterator> | 
 |         map(InputIterator first, InputIterator last, | 
 |             const key_compare& comp = key_compare()); | 
 |     template <class InputIterator> | 
 |         map(InputIterator first, InputIterator last, | 
 |             const key_compare& comp, const allocator_type& a); | 
 |     map(const map& m); | 
 |     map(map&& m) | 
 |         noexcept( | 
 |             is_nothrow_move_constructible<allocator_type>::value && | 
 |             is_nothrow_move_constructible<key_compare>::value); | 
 |     explicit map(const allocator_type& a); | 
 |     map(const map& m, const allocator_type& a); | 
 |     map(map&& m, const allocator_type& a); | 
 |     map(initializer_list<value_type> il, const key_compare& comp = key_compare()); | 
 |     map(initializer_list<value_type> il, const key_compare& comp, const allocator_type& a); | 
 |     template <class InputIterator> | 
 |         map(InputIterator first, InputIterator last, const allocator_type& a) | 
 |             : map(first, last, Compare(), a) {}  // C++14 | 
 |     map(initializer_list<value_type> il, const allocator_type& a) | 
 |         : map(il, Compare(), a) {}  // C++14 | 
 |    ~map(); | 
 |  | 
 |     map& operator=(const map& m); | 
 |     map& operator=(map&& m) | 
 |         noexcept( | 
 |             allocator_type::propagate_on_container_move_assignment::value && | 
 |             is_nothrow_move_assignable<allocator_type>::value && | 
 |             is_nothrow_move_assignable<key_compare>::value); | 
 |     map& operator=(initializer_list<value_type> il); | 
 |  | 
 |     // iterators: | 
 |           iterator begin() noexcept; | 
 |     const_iterator begin() const noexcept; | 
 |           iterator end() noexcept; | 
 |     const_iterator end()   const noexcept; | 
 |  | 
 |           reverse_iterator rbegin() noexcept; | 
 |     const_reverse_iterator rbegin() const noexcept; | 
 |           reverse_iterator rend() noexcept; | 
 |     const_reverse_iterator rend()   const noexcept; | 
 |  | 
 |     const_iterator         cbegin()  const noexcept; | 
 |     const_iterator         cend()    const noexcept; | 
 |     const_reverse_iterator crbegin() const noexcept; | 
 |     const_reverse_iterator crend()   const noexcept; | 
 |  | 
 |     // capacity: | 
 |     bool      empty()    const noexcept; | 
 |     size_type size()     const noexcept; | 
 |     size_type max_size() const noexcept; | 
 |  | 
 |     // element access: | 
 |     mapped_type& operator[](const key_type& k); | 
 |     mapped_type& operator[](key_type&& k); | 
 |  | 
 |           mapped_type& at(const key_type& k); | 
 |     const mapped_type& at(const key_type& k) const; | 
 |  | 
 |     // modifiers: | 
 |     template <class... Args> | 
 |         pair<iterator, bool> emplace(Args&&... args); | 
 |     template <class... Args> | 
 |         iterator emplace_hint(const_iterator position, Args&&... args); | 
 |     pair<iterator, bool> insert(const value_type& v); | 
 |     pair<iterator, bool> insert(      value_type&& v);                                // C++17 | 
 |     template <class P> | 
 |         pair<iterator, bool> insert(P&& p); | 
 |     iterator insert(const_iterator position, const value_type& v); | 
 |     iterator insert(const_iterator position,       value_type&& v);                   // C++17 | 
 |     template <class P> | 
 |         iterator insert(const_iterator position, P&& p); | 
 |     template <class InputIterator> | 
 |         void insert(InputIterator first, InputIterator last); | 
 |     void insert(initializer_list<value_type> il); | 
 |  | 
 |     node_type extract(const_iterator position);                                       // C++17 | 
 |     node_type extract(const key_type& x);                                             // C++17 | 
 |     insert_return_type insert(node_type&& nh);                                        // C++17 | 
 |     iterator insert(const_iterator hint, node_type&& nh);                             // C++17 | 
 |  | 
 |     template <class... Args> | 
 |         pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);          // C++17 | 
 |     template <class... Args> | 
 |         pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);               // C++17 | 
 |     template <class... Args> | 
 |         iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args); // C++17 | 
 |     template <class... Args> | 
 |         iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);      // C++17 | 
 |     template <class M> | 
 |         pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);            // C++17 | 
 |     template <class M> | 
 |         pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);                 // C++17 | 
 |     template <class M> | 
 |         iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);   // C++17 | 
 |     template <class M> | 
 |         iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);        // C++17 | 
 |  | 
 |     iterator  erase(const_iterator position); | 
 |     iterator  erase(iterator position); // C++14 | 
 |     size_type erase(const key_type& k); | 
 |     iterator  erase(const_iterator first, const_iterator last); | 
 |     void clear() noexcept; | 
 |  | 
 |     template<class C2> | 
 |       void merge(map<Key, T, C2, Allocator>& source);         // C++17 | 
 |     template<class C2> | 
 |       void merge(map<Key, T, C2, Allocator>&& source);        // C++17 | 
 |     template<class C2> | 
 |       void merge(multimap<Key, T, C2, Allocator>& source);    // C++17 | 
 |     template<class C2> | 
 |       void merge(multimap<Key, T, C2, Allocator>&& source);   // C++17 | 
 |  | 
 |     void swap(map& m) | 
 |         noexcept(allocator_traits<allocator_type>::is_always_equal::value && | 
 |             is_nothrow_swappable<key_compare>::value); // C++17 | 
 |  | 
 |     // observers: | 
 |     allocator_type get_allocator() const noexcept; | 
 |     key_compare    key_comp()      const; | 
 |     value_compare  value_comp()    const; | 
 |  | 
 |     // map operations: | 
 |           iterator find(const key_type& k); | 
 |     const_iterator find(const key_type& k) const; | 
 |     template<typename K> | 
 |         iterator find(const K& x);              // C++14 | 
 |     template<typename K> | 
 |         const_iterator find(const K& x) const;  // C++14 | 
 |     template<typename K> | 
 |       size_type count(const K& x) const;        // C++14 | 
 |     size_type      count(const key_type& k) const; | 
 |         bool contains(const key_type& x) const; // C++20 | 
 |           iterator lower_bound(const key_type& k); | 
 |     const_iterator lower_bound(const key_type& k) const; | 
 |     template<typename K> | 
 |         iterator lower_bound(const K& x);              // C++14 | 
 |     template<typename K> | 
 |         const_iterator lower_bound(const K& x) const;  // C++14 | 
 |  | 
 |           iterator upper_bound(const key_type& k); | 
 |     const_iterator upper_bound(const key_type& k) const; | 
 |     template<typename K> | 
 |         iterator upper_bound(const K& x);              // C++14 | 
 |     template<typename K> | 
 |         const_iterator upper_bound(const K& x) const;  // C++14 | 
 |  | 
 |     pair<iterator,iterator>             equal_range(const key_type& k); | 
 |     pair<const_iterator,const_iterator> equal_range(const key_type& k) const; | 
 |     template<typename K> | 
 |         pair<iterator,iterator>             equal_range(const K& x);        // C++14 | 
 |     template<typename K> | 
 |         pair<const_iterator,const_iterator> equal_range(const K& x) const;  // C++14 | 
 | }; | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator==(const map<Key, T, Compare, Allocator>& x, | 
 |            const map<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator< (const map<Key, T, Compare, Allocator>& x, | 
 |            const map<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator!=(const map<Key, T, Compare, Allocator>& x, | 
 |            const map<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator> (const map<Key, T, Compare, Allocator>& x, | 
 |            const map<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator>=(const map<Key, T, Compare, Allocator>& x, | 
 |            const map<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator<=(const map<Key, T, Compare, Allocator>& x, | 
 |            const map<Key, T, Compare, Allocator>& y); | 
 |  | 
 | // specialized algorithms: | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | void | 
 | swap(map<Key, T, Compare, Allocator>& x, map<Key, T, Compare, Allocator>& y) | 
 |     noexcept(noexcept(x.swap(y))); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator, class Predicate> | 
 | typename map<Key, T, Compare, Allocator>::size_type | 
 | erase_if(map<Key, T, Compare, Allocator>& c, Predicate pred);  // C++20 | 
 |  | 
 |  | 
 | template <class Key, class T, class Compare = less<Key>, | 
 |           class Allocator = allocator<pair<const Key, T>>> | 
 | class multimap | 
 | { | 
 | public: | 
 |     // types: | 
 |     typedef Key                                      key_type; | 
 |     typedef T                                        mapped_type; | 
 |     typedef pair<const key_type,mapped_type>         value_type; | 
 |     typedef Compare                                  key_compare; | 
 |     typedef Allocator                                allocator_type; | 
 |     typedef typename allocator_type::reference       reference; | 
 |     typedef typename allocator_type::const_reference const_reference; | 
 |     typedef typename allocator_type::size_type       size_type; | 
 |     typedef typename allocator_type::difference_type difference_type; | 
 |     typedef typename allocator_type::pointer         pointer; | 
 |     typedef typename allocator_type::const_pointer   const_pointer; | 
 |  | 
 |     typedef implementation-defined                   iterator; | 
 |     typedef implementation-defined                   const_iterator; | 
 |     typedef std::reverse_iterator<iterator>          reverse_iterator; | 
 |     typedef std::reverse_iterator<const_iterator>    const_reverse_iterator; | 
 |     typedef unspecified                              node_type;              // C++17 | 
 |  | 
 |     class value_compare | 
 |         : public binary_function<value_type,value_type,bool> | 
 |     { | 
 |         friend class multimap; | 
 |     protected: | 
 |         key_compare comp; | 
 |         value_compare(key_compare c); | 
 |     public: | 
 |         bool operator()(const value_type& x, const value_type& y) const; | 
 |     }; | 
 |  | 
 |     // construct/copy/destroy: | 
 |     multimap() | 
 |         noexcept( | 
 |             is_nothrow_default_constructible<allocator_type>::value && | 
 |             is_nothrow_default_constructible<key_compare>::value && | 
 |             is_nothrow_copy_constructible<key_compare>::value); | 
 |     explicit multimap(const key_compare& comp); | 
 |     multimap(const key_compare& comp, const allocator_type& a); | 
 |     template <class InputIterator> | 
 |         multimap(InputIterator first, InputIterator last, const key_compare& comp); | 
 |     template <class InputIterator> | 
 |         multimap(InputIterator first, InputIterator last, const key_compare& comp, | 
 |                  const allocator_type& a); | 
 |     multimap(const multimap& m); | 
 |     multimap(multimap&& m) | 
 |         noexcept( | 
 |             is_nothrow_move_constructible<allocator_type>::value && | 
 |             is_nothrow_move_constructible<key_compare>::value); | 
 |     explicit multimap(const allocator_type& a); | 
 |     multimap(const multimap& m, const allocator_type& a); | 
 |     multimap(multimap&& m, const allocator_type& a); | 
 |     multimap(initializer_list<value_type> il, const key_compare& comp = key_compare()); | 
 |     multimap(initializer_list<value_type> il, const key_compare& comp, | 
 |              const allocator_type& a); | 
 |     template <class InputIterator> | 
 |         multimap(InputIterator first, InputIterator last, const allocator_type& a) | 
 |             : multimap(first, last, Compare(), a) {} // C++14 | 
 |     multimap(initializer_list<value_type> il, const allocator_type& a) | 
 |         : multimap(il, Compare(), a) {} // C++14 | 
 |     ~multimap(); | 
 |  | 
 |     multimap& operator=(const multimap& m); | 
 |     multimap& operator=(multimap&& m) | 
 |         noexcept( | 
 |             allocator_type::propagate_on_container_move_assignment::value && | 
 |             is_nothrow_move_assignable<allocator_type>::value && | 
 |             is_nothrow_move_assignable<key_compare>::value); | 
 |     multimap& operator=(initializer_list<value_type> il); | 
 |  | 
 |     // iterators: | 
 |           iterator begin() noexcept; | 
 |     const_iterator begin() const noexcept; | 
 |           iterator end() noexcept; | 
 |     const_iterator end()   const noexcept; | 
 |  | 
 |           reverse_iterator rbegin() noexcept; | 
 |     const_reverse_iterator rbegin() const noexcept; | 
 |           reverse_iterator rend() noexcept; | 
 |     const_reverse_iterator rend()   const noexcept; | 
 |  | 
 |     const_iterator         cbegin()  const noexcept; | 
 |     const_iterator         cend()    const noexcept; | 
 |     const_reverse_iterator crbegin() const noexcept; | 
 |     const_reverse_iterator crend()   const noexcept; | 
 |  | 
 |     // capacity: | 
 |     bool      empty()    const noexcept; | 
 |     size_type size()     const noexcept; | 
 |     size_type max_size() const noexcept; | 
 |  | 
 |     // modifiers: | 
 |     template <class... Args> | 
 |         iterator emplace(Args&&... args); | 
 |     template <class... Args> | 
 |         iterator emplace_hint(const_iterator position, Args&&... args); | 
 |     iterator insert(const value_type& v); | 
 |     iterator insert(      value_type&& v);                                            // C++17 | 
 |     template <class P> | 
 |         iterator insert(P&& p); | 
 |     iterator insert(const_iterator position, const value_type& v); | 
 |     iterator insert(const_iterator position,       value_type&& v);                   // C++17 | 
 |     template <class P> | 
 |         iterator insert(const_iterator position, P&& p); | 
 |     template <class InputIterator> | 
 |         void insert(InputIterator first, InputIterator last); | 
 |     void insert(initializer_list<value_type> il); | 
 |  | 
 |     node_type extract(const_iterator position);                                       // C++17 | 
 |     node_type extract(const key_type& x);                                             // C++17 | 
 |     iterator insert(node_type&& nh);                                                  // C++17 | 
 |     iterator insert(const_iterator hint, node_type&& nh);                             // C++17 | 
 |  | 
 |     iterator  erase(const_iterator position); | 
 |     iterator  erase(iterator position); // C++14 | 
 |     size_type erase(const key_type& k); | 
 |     iterator  erase(const_iterator first, const_iterator last); | 
 |     void clear() noexcept; | 
 |  | 
 |     template<class C2> | 
 |       void merge(multimap<Key, T, C2, Allocator>& source);    // C++17 | 
 |     template<class C2> | 
 |       void merge(multimap<Key, T, C2, Allocator>&& source);   // C++17 | 
 |     template<class C2> | 
 |       void merge(map<Key, T, C2, Allocator>& source);         // C++17 | 
 |     template<class C2> | 
 |       void merge(map<Key, T, C2, Allocator>&& source);        // C++17 | 
 |  | 
 |     void swap(multimap& m) | 
 |         noexcept(allocator_traits<allocator_type>::is_always_equal::value && | 
 |             is_nothrow_swappable<key_compare>::value); // C++17 | 
 |  | 
 |     // observers: | 
 |     allocator_type get_allocator() const noexcept; | 
 |     key_compare    key_comp()      const; | 
 |     value_compare  value_comp()    const; | 
 |  | 
 |     // map operations: | 
 |           iterator find(const key_type& k); | 
 |     const_iterator find(const key_type& k) const; | 
 |     template<typename K> | 
 |         iterator find(const K& x);              // C++14 | 
 |     template<typename K> | 
 |         const_iterator find(const K& x) const;  // C++14 | 
 |     template<typename K> | 
 |       size_type count(const K& x) const;        // C++14 | 
 |     size_type      count(const key_type& k) const; | 
 |         bool contains(const key_type& x) const; // C++20 | 
 |           iterator lower_bound(const key_type& k); | 
 |     const_iterator lower_bound(const key_type& k) const; | 
 |     template<typename K> | 
 |         iterator lower_bound(const K& x);              // C++14 | 
 |     template<typename K> | 
 |         const_iterator lower_bound(const K& x) const;  // C++14 | 
 |  | 
 |           iterator upper_bound(const key_type& k); | 
 |     const_iterator upper_bound(const key_type& k) const; | 
 |     template<typename K> | 
 |         iterator upper_bound(const K& x);              // C++14 | 
 |     template<typename K> | 
 |         const_iterator upper_bound(const K& x) const;  // C++14 | 
 |  | 
 |     pair<iterator,iterator>             equal_range(const key_type& k); | 
 |     pair<const_iterator,const_iterator> equal_range(const key_type& k) const; | 
 |     template<typename K> | 
 |         pair<iterator,iterator>             equal_range(const K& x);        // C++14 | 
 |     template<typename K> | 
 |         pair<const_iterator,const_iterator> equal_range(const K& x) const;  // C++14 | 
 | }; | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator==(const multimap<Key, T, Compare, Allocator>& x, | 
 |            const multimap<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator< (const multimap<Key, T, Compare, Allocator>& x, | 
 |            const multimap<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator!=(const multimap<Key, T, Compare, Allocator>& x, | 
 |            const multimap<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator> (const multimap<Key, T, Compare, Allocator>& x, | 
 |            const multimap<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator>=(const multimap<Key, T, Compare, Allocator>& x, | 
 |            const multimap<Key, T, Compare, Allocator>& y); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | bool | 
 | operator<=(const multimap<Key, T, Compare, Allocator>& x, | 
 |            const multimap<Key, T, Compare, Allocator>& y); | 
 |  | 
 | // specialized algorithms: | 
 | template <class Key, class T, class Compare, class Allocator> | 
 | void | 
 | swap(multimap<Key, T, Compare, Allocator>& x, | 
 |      multimap<Key, T, Compare, Allocator>& y) | 
 |     noexcept(noexcept(x.swap(y))); | 
 |  | 
 | template <class Key, class T, class Compare, class Allocator, class Predicate> | 
 | typename multimap<Key, T, Compare, Allocator>::size_type | 
 | erase_if(multimap<Key, T, Compare, Allocator>& c, Predicate pred);  // C++20 | 
 |  | 
 | }  // std | 
 |  | 
 | */ | 
 |  | 
 | #include <__config> | 
 | #include <__tree> | 
 | #include <__node_handle> | 
 | #include <iterator> | 
 | #include <memory> | 
 | #include <utility> | 
 | #include <functional> | 
 | #include <initializer_list> | 
 | #include <type_traits> | 
 | #include <version> | 
 |  | 
 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | 
 | #pragma GCC system_header | 
 | #endif | 
 |  | 
 | _LIBCPP_BEGIN_NAMESPACE_STD | 
 |  | 
 | template <class _Key, class _CP, class _Compare, | 
 |           bool = is_empty<_Compare>::value && !__libcpp_is_final<_Compare>::value> | 
 | class __map_value_compare | 
 |     : private _Compare | 
 | { | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_value_compare() | 
 |         _NOEXCEPT_(is_nothrow_default_constructible<_Compare>::value) | 
 |         : _Compare() {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_value_compare(_Compare c) | 
 |         _NOEXCEPT_(is_nothrow_copy_constructible<_Compare>::value) | 
 |         : _Compare(c) {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const _Compare& key_comp() const _NOEXCEPT {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(const _CP& __x, const _CP& __y) const | 
 |         {return static_cast<const _Compare&>(*this)(__x.__get_value().first, __y.__get_value().first);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(const _CP& __x, const _Key& __y) const | 
 |         {return static_cast<const _Compare&>(*this)(__x.__get_value().first, __y);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(const _Key& __x, const _CP& __y) const | 
 |         {return static_cast<const _Compare&>(*this)(__x, __y.__get_value().first);} | 
 |     void swap(__map_value_compare&__y) | 
 |         _NOEXCEPT_(__is_nothrow_swappable<_Compare>::value) | 
 |     { | 
 |       using _VSTD::swap; | 
 |       swap(static_cast<_Compare&>(*this), static_cast<_Compare&>(__y)); | 
 |     } | 
 |  | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value, bool>::type | 
 |     operator () ( const _K2& __x, const _CP& __y ) const | 
 |         {return static_cast<const _Compare&>(*this) (__x, __y.__get_value().first);} | 
 |  | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value, bool>::type | 
 |     operator () (const _CP& __x, const _K2& __y) const | 
 |         {return static_cast<const _Compare&>(*this) (__x.__get_value().first, __y);} | 
 | #endif | 
 | }; | 
 |  | 
 | template <class _Key, class _CP, class _Compare> | 
 | class __map_value_compare<_Key, _CP, _Compare, false> | 
 | { | 
 |     _Compare comp; | 
 |  | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_value_compare() | 
 |         _NOEXCEPT_(is_nothrow_default_constructible<_Compare>::value) | 
 |         : comp() {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_value_compare(_Compare c) | 
 |         _NOEXCEPT_(is_nothrow_copy_constructible<_Compare>::value) | 
 |         : comp(c) {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const _Compare& key_comp() const _NOEXCEPT {return comp;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(const _CP& __x, const _CP& __y) const | 
 |         {return comp(__x.__get_value().first, __y.__get_value().first);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(const _CP& __x, const _Key& __y) const | 
 |         {return comp(__x.__get_value().first, __y);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(const _Key& __x, const _CP& __y) const | 
 |         {return comp(__x, __y.__get_value().first);} | 
 |     void swap(__map_value_compare&__y) | 
 |         _NOEXCEPT_(__is_nothrow_swappable<_Compare>::value) | 
 |     { | 
 |         using _VSTD::swap; | 
 |         swap(comp, __y.comp); | 
 |     } | 
 |  | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value, bool>::type | 
 |     operator () ( const _K2& __x, const _CP& __y ) const | 
 |         {return comp (__x, __y.__get_value().first);} | 
 |  | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value, bool>::type | 
 |     operator () (const _CP& __x, const _K2& __y) const | 
 |         {return comp (__x.__get_value().first, __y);} | 
 | #endif | 
 | }; | 
 |  | 
 | template <class _Key, class _CP, class _Compare, bool __b> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(__map_value_compare<_Key, _CP, _Compare, __b>& __x, | 
 |      __map_value_compare<_Key, _CP, _Compare, __b>& __y) | 
 |     _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) | 
 | { | 
 |     __x.swap(__y); | 
 | } | 
 |  | 
 | template <class _Allocator> | 
 | class __map_node_destructor | 
 | { | 
 |     typedef _Allocator                          allocator_type; | 
 |     typedef allocator_traits<allocator_type>    __alloc_traits; | 
 |  | 
 | public: | 
 |     typedef typename __alloc_traits::pointer    pointer; | 
 |  | 
 | private: | 
 |     allocator_type& __na_; | 
 |  | 
 |     __map_node_destructor& operator=(const __map_node_destructor&); | 
 |  | 
 | public: | 
 |     bool __first_constructed; | 
 |     bool __second_constructed; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit __map_node_destructor(allocator_type& __na) _NOEXCEPT | 
 |         : __na_(__na), | 
 |           __first_constructed(false), | 
 |           __second_constructed(false) | 
 |         {} | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_node_destructor(__tree_node_destructor<allocator_type>&& __x) _NOEXCEPT | 
 |         : __na_(__x.__na_), | 
 |           __first_constructed(__x.__value_constructed), | 
 |           __second_constructed(__x.__value_constructed) | 
 |         { | 
 |             __x.__value_constructed = false; | 
 |         } | 
 | #endif  // _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void operator()(pointer __p) _NOEXCEPT | 
 |     { | 
 |         if (__second_constructed) | 
 |             __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.__get_value().second)); | 
 |         if (__first_constructed) | 
 |             __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_.__get_value().first)); | 
 |         if (__p) | 
 |             __alloc_traits::deallocate(__na_, __p, 1); | 
 |     } | 
 | }; | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 |     class map; | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 |     class multimap; | 
 | template <class _TreeIterator> class __map_const_iterator; | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |  | 
 | template <class _Key, class _Tp> | 
 | struct __value_type | 
 | { | 
 |     typedef _Key                                     key_type; | 
 |     typedef _Tp                                      mapped_type; | 
 |     typedef pair<const key_type, mapped_type>        value_type; | 
 |     typedef pair<key_type&, mapped_type&>            __nc_ref_pair_type; | 
 |     typedef pair<key_type&&, mapped_type&&>          __nc_rref_pair_type; | 
 |  | 
 | private: | 
 |     value_type __cc; | 
 |  | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     value_type& __get_value() | 
 |     { | 
 | #if _LIBCPP_STD_VER > 14 | 
 |         return *_VSTD::launder(_VSTD::addressof(__cc)); | 
 | #else | 
 |         return __cc; | 
 | #endif | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const value_type& __get_value() const | 
 |     { | 
 | #if _LIBCPP_STD_VER > 14 | 
 |         return *_VSTD::launder(_VSTD::addressof(__cc)); | 
 | #else | 
 |         return __cc; | 
 | #endif | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __nc_ref_pair_type __ref() | 
 |     { | 
 |         value_type& __v = __get_value(); | 
 |         return __nc_ref_pair_type(const_cast<key_type&>(__v.first), __v.second); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __nc_rref_pair_type __move() | 
 |     { | 
 |         value_type& __v = __get_value(); | 
 |         return __nc_rref_pair_type( | 
 |             _VSTD::move(const_cast<key_type&>(__v.first)), | 
 |             _VSTD::move(__v.second)); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __value_type& operator=(const __value_type& __v) | 
 |     { | 
 |         __ref() = __v.__get_value(); | 
 |         return *this; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __value_type& operator=(__value_type&& __v) | 
 |     { | 
 |         __ref() = __v.__move(); | 
 |         return *this; | 
 |     } | 
 |  | 
 |     template <class _ValueTp, | 
 |               class = typename enable_if< | 
 |                     __is_same_uncvref<_ValueTp, value_type>::value | 
 |                  >::type | 
 |              > | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __value_type& operator=(_ValueTp&& __v) | 
 |     { | 
 |         __ref() = _VSTD::forward<_ValueTp>(__v); | 
 |         return *this; | 
 |     } | 
 |  | 
 | private: | 
 |     __value_type() _LIBCPP_EQUAL_DELETE; | 
 |     ~__value_type() _LIBCPP_EQUAL_DELETE; | 
 |     __value_type(const __value_type& __v) _LIBCPP_EQUAL_DELETE; | 
 |     __value_type(__value_type&& __v) _LIBCPP_EQUAL_DELETE; | 
 | }; | 
 |  | 
 | #else | 
 |  | 
 | template <class _Key, class _Tp> | 
 | struct __value_type | 
 | { | 
 |     typedef _Key                                     key_type; | 
 |     typedef _Tp                                      mapped_type; | 
 |     typedef pair<const key_type, mapped_type>        value_type; | 
 |  | 
 | private: | 
 |     value_type __cc; | 
 |  | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     value_type& __get_value() { return __cc; } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const value_type& __get_value() const { return __cc; } | 
 |  | 
 | private: | 
 |    __value_type(); | 
 |    __value_type(__value_type const&); | 
 |    __value_type& operator=(__value_type const&); | 
 |    ~__value_type(); | 
 | }; | 
 |  | 
 | #endif // _LIBCPP_CXX03_LANG | 
 |  | 
 | template <class _Tp> | 
 | struct __extract_key_value_types; | 
 |  | 
 | template <class _Key, class _Tp> | 
 | struct __extract_key_value_types<__value_type<_Key, _Tp> > | 
 | { | 
 |   typedef _Key const __key_type; | 
 |   typedef _Tp        __mapped_type; | 
 | }; | 
 |  | 
 | template <class _TreeIterator> | 
 | class _LIBCPP_TEMPLATE_VIS __map_iterator | 
 | { | 
 |     typedef typename _TreeIterator::_NodeTypes                   _NodeTypes; | 
 |     typedef typename _TreeIterator::__pointer_traits             __pointer_traits; | 
 |  | 
 |     _TreeIterator __i_; | 
 |  | 
 | public: | 
 |     typedef bidirectional_iterator_tag                           iterator_category; | 
 |     typedef typename _NodeTypes::__map_value_type                value_type; | 
 |     typedef typename _TreeIterator::difference_type              difference_type; | 
 |     typedef value_type&                                          reference; | 
 |     typedef typename _NodeTypes::__map_value_type_pointer        pointer; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_iterator() _NOEXCEPT {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_iterator(_TreeIterator __i) _NOEXCEPT : __i_(__i) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     reference operator*() const {return __i_->__get_value();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pointer operator->() const {return pointer_traits<pointer>::pointer_to(__i_->__get_value());} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_iterator& operator++() {++__i_; return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_iterator operator++(int) | 
 |     { | 
 |         __map_iterator __t(*this); | 
 |         ++(*this); | 
 |         return __t; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_iterator& operator--() {--__i_; return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_iterator operator--(int) | 
 |     { | 
 |         __map_iterator __t(*this); | 
 |         --(*this); | 
 |         return __t; | 
 |     } | 
 |  | 
 |     friend _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator==(const __map_iterator& __x, const __map_iterator& __y) | 
 |         {return __x.__i_ == __y.__i_;} | 
 |     friend | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator!=(const __map_iterator& __x, const __map_iterator& __y) | 
 |         {return __x.__i_ != __y.__i_;} | 
 |  | 
 |     template <class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS map; | 
 |     template <class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS multimap; | 
 |     template <class> friend class _LIBCPP_TEMPLATE_VIS __map_const_iterator; | 
 | }; | 
 |  | 
 | template <class _TreeIterator> | 
 | class _LIBCPP_TEMPLATE_VIS __map_const_iterator | 
 | { | 
 |     typedef typename _TreeIterator::_NodeTypes                   _NodeTypes; | 
 |     typedef typename _TreeIterator::__pointer_traits             __pointer_traits; | 
 |  | 
 |     _TreeIterator __i_; | 
 |  | 
 | public: | 
 |     typedef bidirectional_iterator_tag                           iterator_category; | 
 |     typedef typename _NodeTypes::__map_value_type                value_type; | 
 |     typedef typename _TreeIterator::difference_type              difference_type; | 
 |     typedef const value_type&                                    reference; | 
 |     typedef typename _NodeTypes::__const_map_value_type_pointer  pointer; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator() _NOEXCEPT {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator(_TreeIterator __i) _NOEXCEPT : __i_(__i) {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator(__map_iterator< | 
 |         typename _TreeIterator::__non_const_iterator> __i) _NOEXCEPT | 
 |         : __i_(__i.__i_) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     reference operator*() const {return __i_->__get_value();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pointer operator->() const {return pointer_traits<pointer>::pointer_to(__i_->__get_value());} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator& operator++() {++__i_; return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator operator++(int) | 
 |     { | 
 |         __map_const_iterator __t(*this); | 
 |         ++(*this); | 
 |         return __t; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator& operator--() {--__i_; return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __map_const_iterator operator--(int) | 
 |     { | 
 |         __map_const_iterator __t(*this); | 
 |         --(*this); | 
 |         return __t; | 
 |     } | 
 |  | 
 |     friend _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator==(const __map_const_iterator& __x, const __map_const_iterator& __y) | 
 |         {return __x.__i_ == __y.__i_;} | 
 |     friend _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator!=(const __map_const_iterator& __x, const __map_const_iterator& __y) | 
 |         {return __x.__i_ != __y.__i_;} | 
 |  | 
 |     template <class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS map; | 
 |     template <class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS multimap; | 
 |     template <class, class, class> friend class _LIBCPP_TEMPLATE_VIS __tree_const_iterator; | 
 | }; | 
 |  | 
 | template <class _Key, class _Tp, class _Compare = less<_Key>, | 
 |           class _Allocator = allocator<pair<const _Key, _Tp> > > | 
 | class _LIBCPP_TEMPLATE_VIS map | 
 | { | 
 | public: | 
 |     // types: | 
 |     typedef _Key                                     key_type; | 
 |     typedef _Tp                                      mapped_type; | 
 |     typedef pair<const key_type, mapped_type>        value_type; | 
 |     typedef typename __identity<_Compare>::type      key_compare; | 
 |     typedef typename __identity<_Allocator>::type    allocator_type; | 
 |     typedef value_type&                              reference; | 
 |     typedef const value_type&                        const_reference; | 
 |  | 
 |     static_assert((is_same<typename allocator_type::value_type, value_type>::value), | 
 |                   "Allocator::value_type must be same type as value_type"); | 
 |  | 
 |     class _LIBCPP_TEMPLATE_VIS value_compare | 
 |         : public binary_function<value_type, value_type, bool> | 
 |     { | 
 |         friend class map; | 
 |     protected: | 
 |         key_compare comp; | 
 |  | 
 |         _LIBCPP_INLINE_VISIBILITY value_compare(key_compare c) : comp(c) {} | 
 |     public: | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         bool operator()(const value_type& __x, const value_type& __y) const | 
 |             {return comp(__x.first, __y.first);} | 
 |     }; | 
 |  | 
 | private: | 
 |  | 
 |     typedef _VSTD::__value_type<key_type, mapped_type>             __value_type; | 
 |     typedef __map_value_compare<key_type, __value_type, key_compare> __vc; | 
 |     typedef typename __rebind_alloc_helper<allocator_traits<allocator_type>, | 
 |                                                  __value_type>::type __allocator_type; | 
 |     typedef __tree<__value_type, __vc, __allocator_type>   __base; | 
 |     typedef typename __base::__node_traits                 __node_traits; | 
 |     typedef allocator_traits<allocator_type>               __alloc_traits; | 
 |  | 
 |     __base __tree_; | 
 |  | 
 | public: | 
 |     typedef typename __alloc_traits::pointer               pointer; | 
 |     typedef typename __alloc_traits::const_pointer         const_pointer; | 
 |     typedef typename __alloc_traits::size_type             size_type; | 
 |     typedef typename __alloc_traits::difference_type       difference_type; | 
 |     typedef __map_iterator<typename __base::iterator>             iterator; | 
 |     typedef __map_const_iterator<typename __base::const_iterator> const_iterator; | 
 |     typedef _VSTD::reverse_iterator<iterator>               reverse_iterator; | 
 |     typedef _VSTD::reverse_iterator<const_iterator>         const_reverse_iterator; | 
 |  | 
 | #if _LIBCPP_STD_VER > 14 | 
 |     typedef __map_node_handle<typename __base::__node, allocator_type> node_type; | 
 |     typedef __insert_return_type<iterator, node_type> insert_return_type; | 
 | #endif | 
 |  | 
 |     template <class _Key2, class _Value2, class _Comp2, class _Alloc2> | 
 |         friend class _LIBCPP_TEMPLATE_VIS map; | 
 |     template <class _Key2, class _Value2, class _Comp2, class _Alloc2> | 
 |         friend class _LIBCPP_TEMPLATE_VIS multimap; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map() | 
 |         _NOEXCEPT_( | 
 |             is_nothrow_default_constructible<allocator_type>::value && | 
 |             is_nothrow_default_constructible<key_compare>::value && | 
 |             is_nothrow_copy_constructible<key_compare>::value) | 
 |         : __tree_(__vc(key_compare())) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit map(const key_compare& __comp) | 
 |         _NOEXCEPT_( | 
 |             is_nothrow_default_constructible<allocator_type>::value && | 
 |             is_nothrow_copy_constructible<key_compare>::value) | 
 |         : __tree_(__vc(__comp)) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit map(const key_compare& __comp, const allocator_type& __a) | 
 |         : __tree_(__vc(__comp), typename __base::allocator_type(__a)) {} | 
 |  | 
 |     template <class _InputIterator> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |         map(_InputIterator __f, _InputIterator __l, | 
 |             const key_compare& __comp = key_compare()) | 
 |         : __tree_(__vc(__comp)) | 
 |         { | 
 |             insert(__f, __l); | 
 |         } | 
 |  | 
 |     template <class _InputIterator> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |         map(_InputIterator __f, _InputIterator __l, | 
 |             const key_compare& __comp, const allocator_type& __a) | 
 |         : __tree_(__vc(__comp), typename __base::allocator_type(__a)) | 
 |         { | 
 |             insert(__f, __l); | 
 |         } | 
 |  | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <class _InputIterator> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(_InputIterator __f, _InputIterator __l, const allocator_type& __a) | 
 |         : map(__f, __l, key_compare(), __a) {} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(const map& __m) | 
 |         : __tree_(__m.__tree_) | 
 |         { | 
 |             insert(__m.begin(), __m.end()); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map& operator=(const map& __m) | 
 |         { | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |             __tree_ = __m.__tree_; | 
 | #else | 
 |             if (this != &__m) { | 
 |                 __tree_.clear(); | 
 |                 __tree_.value_comp() = __m.__tree_.value_comp(); | 
 |                 __tree_.__copy_assign_alloc(__m.__tree_); | 
 |                 insert(__m.begin(), __m.end()); | 
 |             } | 
 | #endif | 
 |             return *this; | 
 |         } | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(map&& __m) | 
 |         _NOEXCEPT_(is_nothrow_move_constructible<__base>::value) | 
 |         : __tree_(_VSTD::move(__m.__tree_)) | 
 |         { | 
 |         } | 
 |  | 
 |     map(map&& __m, const allocator_type& __a); | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map& operator=(map&& __m) | 
 |         _NOEXCEPT_(is_nothrow_move_assignable<__base>::value) | 
 |         { | 
 |             __tree_ = _VSTD::move(__m.__tree_); | 
 |             return *this; | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(initializer_list<value_type> __il, const key_compare& __comp = key_compare()) | 
 |         : __tree_(__vc(__comp)) | 
 |         { | 
 |             insert(__il.begin(), __il.end()); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(initializer_list<value_type> __il, const key_compare& __comp, const allocator_type& __a) | 
 |         : __tree_(__vc(__comp), typename __base::allocator_type(__a)) | 
 |         { | 
 |             insert(__il.begin(), __il.end()); | 
 |         } | 
 |  | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(initializer_list<value_type> __il, const allocator_type& __a) | 
 |         : map(__il, key_compare(), __a) {} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map& operator=(initializer_list<value_type> __il) | 
 |         { | 
 |             __tree_.__assign_unique(__il.begin(), __il.end()); | 
 |             return *this; | 
 |         } | 
 |  | 
 | #endif  // _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit map(const allocator_type& __a) | 
 |         : __tree_(typename __base::allocator_type(__a)) | 
 |         { | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     map(const map& __m, const allocator_type& __a) | 
 |         : __tree_(__m.__tree_.value_comp(), typename __base::allocator_type(__a)) | 
 |         { | 
 |             insert(__m.begin(), __m.end()); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     ~map() { | 
 |         static_assert(sizeof(__diagnose_non_const_comparator<_Key, _Compare>()), ""); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           iterator begin() _NOEXCEPT {return __tree_.begin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator begin() const _NOEXCEPT {return __tree_.begin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           iterator end() _NOEXCEPT {return __tree_.end();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator end() const _NOEXCEPT {return __tree_.end();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator rbegin() const _NOEXCEPT | 
 |         {return const_reverse_iterator(end());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           reverse_iterator rend() _NOEXCEPT | 
 |             {return       reverse_iterator(begin());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator rend() const _NOEXCEPT | 
 |         {return const_reverse_iterator(begin());} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator cbegin() const _NOEXCEPT {return begin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator cend() const _NOEXCEPT {return end();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator crend() const _NOEXCEPT {return rend();} | 
 |  | 
 |     _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY | 
 |     bool      empty() const _NOEXCEPT {return __tree_.size() == 0;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type size() const _NOEXCEPT {return __tree_.size();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type max_size() const _NOEXCEPT {return __tree_.max_size();} | 
 |  | 
 |     mapped_type& operator[](const key_type& __k); | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |     mapped_type& operator[](key_type&& __k); | 
 | #endif | 
 |  | 
 |           mapped_type& at(const key_type& __k); | 
 |     const mapped_type& at(const key_type& __k) const; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     allocator_type get_allocator() const _NOEXCEPT {return allocator_type(__tree_.__alloc());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     key_compare    key_comp()      const {return __tree_.value_comp().key_comp();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     value_compare  value_comp()    const {return value_compare(__tree_.value_comp().key_comp());} | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |     template <class ..._Args> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<iterator, bool> emplace(_Args&& ...__args) { | 
 |         return __tree_.__emplace_unique(_VSTD::forward<_Args>(__args)...); | 
 |     } | 
 |  | 
 |     template <class ..._Args> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator emplace_hint(const_iterator __p, _Args&& ...__args) { | 
 |         return __tree_.__emplace_hint_unique(__p.__i_, _VSTD::forward<_Args>(__args)...); | 
 |     } | 
 |  | 
 |     template <class _Pp, | 
 |               class = typename enable_if<is_constructible<value_type, _Pp>::value>::type> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         pair<iterator, bool> insert(_Pp&& __p) | 
 |             {return __tree_.__insert_unique(_VSTD::forward<_Pp>(__p));} | 
 |  | 
 |     template <class _Pp, | 
 |               class = typename enable_if<is_constructible<value_type, _Pp>::value>::type> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator insert(const_iterator __pos, _Pp&& __p) | 
 |             {return __tree_.__insert_unique(__pos.__i_, _VSTD::forward<_Pp>(__p));} | 
 |  | 
 | #endif  // _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<iterator, bool> | 
 |         insert(const value_type& __v) {return __tree_.__insert_unique(__v);} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator | 
 |         insert(const_iterator __p, const value_type& __v) | 
 |             {return __tree_.__insert_unique(__p.__i_, __v);} | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<iterator, bool> | 
 |     insert(value_type&& __v) {return __tree_.__insert_unique(_VSTD::move(__v));} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(const_iterator __p,  value_type&& __v) | 
 |     {return __tree_.__insert_unique(__p.__i_, _VSTD::move(__v));} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void insert(initializer_list<value_type> __il) | 
 |         {insert(__il.begin(), __il.end());} | 
 | #endif | 
 |  | 
 |     template <class _InputIterator> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void insert(_InputIterator __f, _InputIterator __l) | 
 |         { | 
 |             for (const_iterator __e = cend(); __f != __l; ++__f) | 
 |                 insert(__e.__i_, *__f); | 
 |         } | 
 |  | 
 | #if _LIBCPP_STD_VER > 14 | 
 |  | 
 |     template <class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         pair<iterator, bool> try_emplace(const key_type& __k, _Args&&... __args) | 
 |     { | 
 |         return __tree_.__emplace_unique_key_args(__k, | 
 |             _VSTD::piecewise_construct, | 
 |             _VSTD::forward_as_tuple(__k), | 
 |             _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)); | 
 |     } | 
 |  | 
 |     template <class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         pair<iterator, bool> try_emplace(key_type&& __k, _Args&&... __args) | 
 |     { | 
 |         return __tree_.__emplace_unique_key_args(__k, | 
 |             _VSTD::piecewise_construct, | 
 |             _VSTD::forward_as_tuple(_VSTD::move(__k)), | 
 |             _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)); | 
 |     } | 
 |  | 
 |     template <class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator try_emplace(const_iterator __h, const key_type& __k, _Args&&... __args) | 
 |     { | 
 |         return __tree_.__emplace_hint_unique_key_args(__h.__i_, __k, | 
 |             _VSTD::piecewise_construct, | 
 |             _VSTD::forward_as_tuple(__k), | 
 |             _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)); | 
 |     } | 
 |  | 
 |     template <class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator try_emplace(const_iterator __h, key_type&& __k, _Args&&... __args) | 
 |     { | 
 |         return __tree_.__emplace_hint_unique_key_args(__h.__i_, __k, | 
 |             _VSTD::piecewise_construct, | 
 |             _VSTD::forward_as_tuple(_VSTD::move(__k)), | 
 |             _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)); | 
 |     } | 
 |  | 
 |     template <class _Vp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         pair<iterator, bool> insert_or_assign(const key_type& __k, _Vp&& __v) | 
 |     { | 
 |         iterator __p = lower_bound(__k); | 
 |         if ( __p != end() && !key_comp()(__k, __p->first)) | 
 |         { | 
 |             __p->second = _VSTD::forward<_Vp>(__v); | 
 |             return _VSTD::make_pair(__p, false); | 
 |         } | 
 |         return _VSTD::make_pair(emplace_hint(__p, __k, _VSTD::forward<_Vp>(__v)), true); | 
 |     } | 
 |  | 
 |     template <class _Vp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         pair<iterator, bool> insert_or_assign(key_type&& __k, _Vp&& __v) | 
 |     { | 
 |         iterator __p = lower_bound(__k); | 
 |         if ( __p != end() && !key_comp()(__k, __p->first)) | 
 |         { | 
 |             __p->second = _VSTD::forward<_Vp>(__v); | 
 |             return _VSTD::make_pair(__p, false); | 
 |         } | 
 |         return _VSTD::make_pair(emplace_hint(__p, _VSTD::move(__k), _VSTD::forward<_Vp>(__v)), true); | 
 |     } | 
 |  | 
 |     template <class _Vp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator insert_or_assign(const_iterator __h, const key_type& __k, _Vp&& __v) | 
 |      { | 
 |         iterator __p = lower_bound(__k); | 
 |         if ( __p != end() && !key_comp()(__k, __p->first)) | 
 |         { | 
 |             __p->second = _VSTD::forward<_Vp>(__v); | 
 |             return __p; | 
 |         } | 
 |         return emplace_hint(__h, __k, _VSTD::forward<_Vp>(__v)); | 
 |      } | 
 |  | 
 |     template <class _Vp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator insert_or_assign(const_iterator __h, key_type&& __k, _Vp&& __v) | 
 |      { | 
 |         iterator __p = lower_bound(__k); | 
 |         if ( __p != end() && !key_comp()(__k, __p->first)) | 
 |         { | 
 |             __p->second = _VSTD::forward<_Vp>(__v); | 
 |             return __p; | 
 |         } | 
 |         return emplace_hint(__h, _VSTD::move(__k), _VSTD::forward<_Vp>(__v)); | 
 |      } | 
 |  | 
 | #endif // _LIBCPP_STD_VER > 14 | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator erase(const_iterator __p) {return __tree_.erase(__p.__i_);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator erase(iterator __p)       {return __tree_.erase(__p.__i_);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type erase(const key_type& __k) | 
 |         {return __tree_.__erase_unique(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator  erase(const_iterator __f, const_iterator __l) | 
 |         {return __tree_.erase(__f.__i_, __l.__i_);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void clear() _NOEXCEPT {__tree_.clear();} | 
 |  | 
 | #if _LIBCPP_STD_VER > 14 | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     insert_return_type insert(node_type&& __nh) | 
 |     { | 
 |         _LIBCPP_ASSERT(__nh.empty() || __nh.get_allocator() == get_allocator(), | 
 |             "node_type with incompatible allocator passed to map::insert()"); | 
 |         return __tree_.template __node_handle_insert_unique< | 
 |             node_type, insert_return_type>(_VSTD::move(__nh)); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(const_iterator __hint, node_type&& __nh) | 
 |     { | 
 |         _LIBCPP_ASSERT(__nh.empty() || __nh.get_allocator() == get_allocator(), | 
 |             "node_type with incompatible allocator passed to map::insert()"); | 
 |         return __tree_.template __node_handle_insert_unique<node_type>( | 
 |             __hint.__i_, _VSTD::move(__nh)); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     node_type extract(key_type const& __key) | 
 |     { | 
 |         return __tree_.template __node_handle_extract<node_type>(__key); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     node_type extract(const_iterator __it) | 
 |     { | 
 |         return __tree_.template __node_handle_extract<node_type>(__it.__i_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(map<key_type, mapped_type, _Compare2, allocator_type>& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         __tree_.__node_handle_merge_unique(__source.__tree_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(map<key_type, mapped_type, _Compare2, allocator_type>&& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         __tree_.__node_handle_merge_unique(__source.__tree_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(multimap<key_type, mapped_type, _Compare2, allocator_type>& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         __tree_.__node_handle_merge_unique(__source.__tree_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(multimap<key_type, mapped_type, _Compare2, allocator_type>&& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         __tree_.__node_handle_merge_unique(__source.__tree_); | 
 |     } | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void swap(map& __m) | 
 |         _NOEXCEPT_(__is_nothrow_swappable<__base>::value) | 
 |         {__tree_.swap(__m.__tree_);} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator find(const key_type& __k)             {return __tree_.find(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator find(const key_type& __k) const {return __tree_.find(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,iterator>::type | 
 |     find(const _K2& __k)                           {return __tree_.find(__k);} | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,const_iterator>::type | 
 |     find(const _K2& __k) const                     {return __tree_.find(__k);} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type      count(const key_type& __k) const | 
 |         {return __tree_.__count_unique(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,size_type>::type | 
 |     count(const _K2& __k) const {return __tree_.__count_multi(__k);} | 
 | #endif | 
 |  | 
 | #if _LIBCPP_STD_VER > 17 | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool contains(const key_type& __k) const {return find(__k) != end();} | 
 | #endif // _LIBCPP_STD_VER > 17 | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator lower_bound(const key_type& __k) | 
 |         {return __tree_.lower_bound(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator lower_bound(const key_type& __k) const | 
 |         {return __tree_.lower_bound(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,iterator>::type | 
 |     lower_bound(const _K2& __k)       {return __tree_.lower_bound(__k);} | 
 |  | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,const_iterator>::type | 
 |     lower_bound(const _K2& __k) const {return __tree_.lower_bound(__k);} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator upper_bound(const key_type& __k) | 
 |         {return __tree_.upper_bound(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator upper_bound(const key_type& __k) const | 
 |         {return __tree_.upper_bound(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,iterator>::type | 
 |     upper_bound(const _K2& __k)       {return __tree_.upper_bound(__k);} | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,const_iterator>::type | 
 |     upper_bound(const _K2& __k) const {return __tree_.upper_bound(__k);} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<iterator,iterator> equal_range(const key_type& __k) | 
 |         {return __tree_.__equal_range_unique(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<const_iterator,const_iterator> equal_range(const key_type& __k) const | 
 |         {return __tree_.__equal_range_unique(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,pair<iterator,iterator>>::type | 
 |     equal_range(const _K2& __k)       {return __tree_.__equal_range_multi(__k);} | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,pair<const_iterator,const_iterator>>::type | 
 |     equal_range(const _K2& __k) const {return __tree_.__equal_range_multi(__k);} | 
 | #endif | 
 |  | 
 | private: | 
 |     typedef typename __base::__node                    __node; | 
 |     typedef typename __base::__node_allocator          __node_allocator; | 
 |     typedef typename __base::__node_pointer            __node_pointer; | 
 |     typedef typename __base::__node_base_pointer       __node_base_pointer; | 
 |     typedef typename __base::__parent_pointer          __parent_pointer; | 
 |  | 
 |     typedef __map_node_destructor<__node_allocator> _Dp; | 
 |     typedef unique_ptr<__node, _Dp> __node_holder; | 
 |  | 
 | #ifdef _LIBCPP_CXX03_LANG | 
 |     __node_holder __construct_node_with_key(const key_type& __k); | 
 | #endif | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES | 
 | template<class _InputIterator, class _Compare = less<__iter_key_type<_InputIterator>>, | 
 |          class _Allocator = allocator<__iter_to_alloc_type<_InputIterator>>, | 
 |          class = _EnableIf<!__is_allocator<_Compare>::value, void>, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | map(_InputIterator, _InputIterator, _Compare = _Compare(), _Allocator = _Allocator()) | 
 |   -> map<__iter_key_type<_InputIterator>, __iter_mapped_type<_InputIterator>, _Compare, _Allocator>; | 
 |  | 
 | template<class _Key, class _Tp, class _Compare = less<remove_const_t<_Key>>, | 
 |          class _Allocator = allocator<pair<const _Key, _Tp>>, | 
 |          class = _EnableIf<!__is_allocator<_Compare>::value, void>, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | map(initializer_list<pair<_Key, _Tp>>, _Compare = _Compare(), _Allocator = _Allocator()) | 
 |   -> map<remove_const_t<_Key>, _Tp, _Compare, _Allocator>; | 
 |  | 
 | template<class _InputIterator, class _Allocator, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | map(_InputIterator, _InputIterator, _Allocator) | 
 |   -> map<__iter_key_type<_InputIterator>, __iter_mapped_type<_InputIterator>, | 
 |          less<__iter_key_type<_InputIterator>>, _Allocator>; | 
 |  | 
 | template<class _Key, class _Tp, class _Allocator, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | map(initializer_list<pair<_Key, _Tp>>, _Allocator) | 
 |   -> map<remove_const_t<_Key>, _Tp, less<remove_const_t<_Key>>, _Allocator>; | 
 | #endif | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | map<_Key, _Tp, _Compare, _Allocator>::map(map&& __m, const allocator_type& __a) | 
 |     : __tree_(_VSTD::move(__m.__tree_), typename __base::allocator_type(__a)) | 
 | { | 
 |     if (__a != __m.get_allocator()) | 
 |     { | 
 |         const_iterator __e = cend(); | 
 |         while (!__m.empty()) | 
 |             __tree_.__insert_unique(__e.__i_, | 
 |                     __m.__tree_.remove(__m.begin().__i_)->__value_.__move()); | 
 |     } | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | _Tp& | 
 | map<_Key, _Tp, _Compare, _Allocator>::operator[](const key_type& __k) | 
 | { | 
 |     return __tree_.__emplace_unique_key_args(__k, | 
 |         _VSTD::piecewise_construct, | 
 |         _VSTD::forward_as_tuple(__k), | 
 |         _VSTD::forward_as_tuple()).first->__get_value().second; | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | _Tp& | 
 | map<_Key, _Tp, _Compare, _Allocator>::operator[](key_type&& __k) | 
 | { | 
 |     return __tree_.__emplace_unique_key_args(__k, | 
 |         _VSTD::piecewise_construct, | 
 |         _VSTD::forward_as_tuple(_VSTD::move(__k)), | 
 |         _VSTD::forward_as_tuple()).first->__get_value().second; | 
 | } | 
 |  | 
 | #else // _LIBCPP_CXX03_LANG | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | typename map<_Key, _Tp, _Compare, _Allocator>::__node_holder | 
 | map<_Key, _Tp, _Compare, _Allocator>::__construct_node_with_key(const key_type& __k) | 
 | { | 
 |     __node_allocator& __na = __tree_.__node_alloc(); | 
 |     __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); | 
 |     __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__get_value().first), __k); | 
 |     __h.get_deleter().__first_constructed = true; | 
 |     __node_traits::construct(__na, _VSTD::addressof(__h->__value_.__get_value().second)); | 
 |     __h.get_deleter().__second_constructed = true; | 
 |     return _LIBCPP_EXPLICIT_MOVE(__h);  // explicitly moved for C++03 | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | _Tp& | 
 | map<_Key, _Tp, _Compare, _Allocator>::operator[](const key_type& __k) | 
 | { | 
 |     __parent_pointer __parent; | 
 |     __node_base_pointer& __child = __tree_.__find_equal(__parent, __k); | 
 |     __node_pointer __r = static_cast<__node_pointer>(__child); | 
 |     if (__child == nullptr) | 
 |     { | 
 |         __node_holder __h = __construct_node_with_key(__k); | 
 |         __tree_.__insert_node_at(__parent, __child, static_cast<__node_base_pointer>(__h.get())); | 
 |         __r = __h.release(); | 
 |     } | 
 |     return __r->__value_.__get_value().second; | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_CXX03_LANG | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | _Tp& | 
 | map<_Key, _Tp, _Compare, _Allocator>::at(const key_type& __k) | 
 | { | 
 |     __parent_pointer __parent; | 
 |     __node_base_pointer& __child = __tree_.__find_equal(__parent, __k); | 
 |     if (__child == nullptr) | 
 |         __throw_out_of_range("map::at:  key not found"); | 
 |     return static_cast<__node_pointer>(__child)->__value_.__get_value().second; | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | const _Tp& | 
 | map<_Key, _Tp, _Compare, _Allocator>::at(const key_type& __k) const | 
 | { | 
 |     __parent_pointer __parent; | 
 |     __node_base_pointer __child = __tree_.__find_equal(__parent, __k); | 
 |     if (__child == nullptr) | 
 |         __throw_out_of_range("map::at:  key not found"); | 
 |     return static_cast<__node_pointer>(__child)->__value_.__get_value().second; | 
 | } | 
 |  | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator==(const map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return __x.size() == __y.size() && _VSTD::equal(__x.begin(), __x.end(), __y.begin()); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator< (const map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return _VSTD::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end()); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator!=(const map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return !(__x == __y); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator> (const map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return __y < __x; | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator>=(const map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return !(__x < __y); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator<=(const map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return !(__y < __x); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(map<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |      map<_Key, _Tp, _Compare, _Allocator>& __y) | 
 |     _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) | 
 | { | 
 |     __x.swap(__y); | 
 | } | 
 |  | 
 | #if _LIBCPP_STD_VER > 17 | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator, | 
 |           class _Predicate> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 |     typename map<_Key, _Tp, _Compare, _Allocator>::size_type | 
 |     erase_if(map<_Key, _Tp, _Compare, _Allocator>& __c, _Predicate __pred) { | 
 |   return __libcpp_erase_if_container(__c, __pred); | 
 | } | 
 | #endif | 
 |  | 
 |  | 
 | template <class _Key, class _Tp, class _Compare = less<_Key>, | 
 |           class _Allocator = allocator<pair<const _Key, _Tp> > > | 
 | class _LIBCPP_TEMPLATE_VIS multimap | 
 | { | 
 | public: | 
 |     // types: | 
 |     typedef _Key                                     key_type; | 
 |     typedef _Tp                                      mapped_type; | 
 |     typedef pair<const key_type, mapped_type>        value_type; | 
 |     typedef typename __identity<_Compare>::type      key_compare; | 
 |     typedef typename __identity<_Allocator>::type    allocator_type; | 
 |     typedef value_type&                              reference; | 
 |     typedef const value_type&                        const_reference; | 
 |  | 
 |     static_assert((is_same<typename allocator_type::value_type, value_type>::value), | 
 |                   "Allocator::value_type must be same type as value_type"); | 
 |  | 
 |     class _LIBCPP_TEMPLATE_VIS value_compare | 
 |         : public binary_function<value_type, value_type, bool> | 
 |     { | 
 |         friend class multimap; | 
 |     protected: | 
 |         key_compare comp; | 
 |  | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         value_compare(key_compare c) : comp(c) {} | 
 |     public: | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         bool operator()(const value_type& __x, const value_type& __y) const | 
 |             {return comp(__x.first, __y.first);} | 
 |     }; | 
 |  | 
 | private: | 
 |  | 
 |     typedef _VSTD::__value_type<key_type, mapped_type>             __value_type; | 
 |     typedef __map_value_compare<key_type, __value_type, key_compare> __vc; | 
 |     typedef typename __rebind_alloc_helper<allocator_traits<allocator_type>, | 
 |                                                  __value_type>::type __allocator_type; | 
 |     typedef __tree<__value_type, __vc, __allocator_type>            __base; | 
 |     typedef typename __base::__node_traits                          __node_traits; | 
 |     typedef allocator_traits<allocator_type>                        __alloc_traits; | 
 |  | 
 |     __base __tree_; | 
 |  | 
 | public: | 
 |     typedef typename __alloc_traits::pointer               pointer; | 
 |     typedef typename __alloc_traits::const_pointer         const_pointer; | 
 |     typedef typename __alloc_traits::size_type             size_type; | 
 |     typedef typename __alloc_traits::difference_type       difference_type; | 
 |     typedef __map_iterator<typename __base::iterator>      iterator; | 
 |     typedef __map_const_iterator<typename __base::const_iterator> const_iterator; | 
 |     typedef _VSTD::reverse_iterator<iterator>               reverse_iterator; | 
 |     typedef _VSTD::reverse_iterator<const_iterator>         const_reverse_iterator; | 
 |  | 
 | #if _LIBCPP_STD_VER > 14 | 
 |     typedef __map_node_handle<typename __base::__node, allocator_type> node_type; | 
 | #endif | 
 |  | 
 |     template <class _Key2, class _Value2, class _Comp2, class _Alloc2> | 
 |         friend class _LIBCPP_TEMPLATE_VIS map; | 
 |     template <class _Key2, class _Value2, class _Comp2, class _Alloc2> | 
 |         friend class _LIBCPP_TEMPLATE_VIS multimap; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap() | 
 |         _NOEXCEPT_( | 
 |             is_nothrow_default_constructible<allocator_type>::value && | 
 |             is_nothrow_default_constructible<key_compare>::value && | 
 |             is_nothrow_copy_constructible<key_compare>::value) | 
 |         : __tree_(__vc(key_compare())) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit multimap(const key_compare& __comp) | 
 |         _NOEXCEPT_( | 
 |             is_nothrow_default_constructible<allocator_type>::value && | 
 |             is_nothrow_copy_constructible<key_compare>::value) | 
 |         : __tree_(__vc(__comp)) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit multimap(const key_compare& __comp, const allocator_type& __a) | 
 |         : __tree_(__vc(__comp), typename __base::allocator_type(__a)) {} | 
 |  | 
 |     template <class _InputIterator> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         multimap(_InputIterator __f, _InputIterator __l, | 
 |             const key_compare& __comp = key_compare()) | 
 |         : __tree_(__vc(__comp)) | 
 |         { | 
 |             insert(__f, __l); | 
 |         } | 
 |  | 
 |     template <class _InputIterator> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         multimap(_InputIterator __f, _InputIterator __l, | 
 |             const key_compare& __comp, const allocator_type& __a) | 
 |         : __tree_(__vc(__comp), typename __base::allocator_type(__a)) | 
 |         { | 
 |             insert(__f, __l); | 
 |         } | 
 |  | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <class _InputIterator> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(_InputIterator __f, _InputIterator __l, const allocator_type& __a) | 
 |         : multimap(__f, __l, key_compare(), __a) {} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(const multimap& __m) | 
 |         : __tree_(__m.__tree_.value_comp(), | 
 |           __alloc_traits::select_on_container_copy_construction(__m.__tree_.__alloc())) | 
 |         { | 
 |             insert(__m.begin(), __m.end()); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap& operator=(const multimap& __m) | 
 |         { | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |             __tree_ = __m.__tree_; | 
 | #else | 
 |             if (this != &__m) { | 
 |                 __tree_.clear(); | 
 |                 __tree_.value_comp() = __m.__tree_.value_comp(); | 
 |                 __tree_.__copy_assign_alloc(__m.__tree_); | 
 |                 insert(__m.begin(), __m.end()); | 
 |             } | 
 | #endif | 
 |             return *this; | 
 |         } | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(multimap&& __m) | 
 |         _NOEXCEPT_(is_nothrow_move_constructible<__base>::value) | 
 |         : __tree_(_VSTD::move(__m.__tree_)) | 
 |         { | 
 |         } | 
 |  | 
 |     multimap(multimap&& __m, const allocator_type& __a); | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap& operator=(multimap&& __m) | 
 |         _NOEXCEPT_(is_nothrow_move_assignable<__base>::value) | 
 |         { | 
 |             __tree_ = _VSTD::move(__m.__tree_); | 
 |             return *this; | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(initializer_list<value_type> __il, const key_compare& __comp = key_compare()) | 
 |         : __tree_(__vc(__comp)) | 
 |         { | 
 |             insert(__il.begin(), __il.end()); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(initializer_list<value_type> __il, const key_compare& __comp, const allocator_type& __a) | 
 |         : __tree_(__vc(__comp), typename __base::allocator_type(__a)) | 
 |         { | 
 |             insert(__il.begin(), __il.end()); | 
 |         } | 
 |  | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(initializer_list<value_type> __il, const allocator_type& __a) | 
 |         : multimap(__il, key_compare(), __a) {} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap& operator=(initializer_list<value_type> __il) | 
 |         { | 
 |             __tree_.__assign_multi(__il.begin(), __il.end()); | 
 |             return *this; | 
 |         } | 
 |  | 
 | #endif  // _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit multimap(const allocator_type& __a) | 
 |         : __tree_(typename __base::allocator_type(__a)) | 
 |         { | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     multimap(const multimap& __m, const allocator_type& __a) | 
 |         : __tree_(__m.__tree_.value_comp(), typename __base::allocator_type(__a)) | 
 |         { | 
 |             insert(__m.begin(), __m.end()); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     ~multimap() { | 
 |         static_assert(sizeof(__diagnose_non_const_comparator<_Key, _Compare>()), ""); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           iterator begin() _NOEXCEPT {return __tree_.begin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator begin() const _NOEXCEPT {return __tree_.begin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           iterator end() _NOEXCEPT {return __tree_.end();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator end() const _NOEXCEPT {return __tree_.end();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator rbegin() const _NOEXCEPT | 
 |         {return const_reverse_iterator(end());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |           reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator rend() const _NOEXCEPT | 
 |         {return const_reverse_iterator(begin());} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator cbegin()  const _NOEXCEPT {return begin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator cend() const _NOEXCEPT {return end();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_reverse_iterator crend() const _NOEXCEPT {return rend();} | 
 |  | 
 |     _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY | 
 |     bool empty() const _NOEXCEPT {return __tree_.size() == 0;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type size() const _NOEXCEPT {return __tree_.size();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type max_size() const _NOEXCEPT {return __tree_.max_size();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     allocator_type get_allocator() const _NOEXCEPT {return allocator_type(__tree_.__alloc());} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     key_compare    key_comp() const {return __tree_.value_comp().key_comp();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     value_compare  value_comp() const | 
 |         {return value_compare(__tree_.value_comp().key_comp());} | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 |  | 
 |     template <class ..._Args> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator emplace(_Args&& ...__args) { | 
 |         return __tree_.__emplace_multi(_VSTD::forward<_Args>(__args)...); | 
 |     } | 
 |  | 
 |     template <class ..._Args> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator emplace_hint(const_iterator __p, _Args&& ...__args) { | 
 |         return __tree_.__emplace_hint_multi(__p.__i_, _VSTD::forward<_Args>(__args)...); | 
 |     } | 
 |  | 
 |     template <class _Pp, | 
 |               class = typename enable_if<is_constructible<value_type, _Pp>::value>::type> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator insert(_Pp&& __p) | 
 |             {return __tree_.__insert_multi(_VSTD::forward<_Pp>(__p));} | 
 |  | 
 |     template <class _Pp, | 
 |               class = typename enable_if<is_constructible<value_type, _Pp>::value>::type> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         iterator insert(const_iterator __pos, _Pp&& __p) | 
 |             {return __tree_.__insert_multi(__pos.__i_, _VSTD::forward<_Pp>(__p));} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(value_type&& __v) | 
 |         {return __tree_.__insert_multi(_VSTD::move(__v));} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(const_iterator __p, value_type&& __v) | 
 |         {return __tree_.__insert_multi(__p.__i_, _VSTD::move(__v));} | 
 |  | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void insert(initializer_list<value_type> __il) | 
 |         {insert(__il.begin(), __il.end());} | 
 |  | 
 | #endif  // _LIBCPP_CXX03_LANG | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(const value_type& __v) {return __tree_.__insert_multi(__v);} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(const_iterator __p, const value_type& __v) | 
 |             {return __tree_.__insert_multi(__p.__i_, __v);} | 
 |  | 
 |     template <class _InputIterator> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void insert(_InputIterator __f, _InputIterator __l) | 
 |         { | 
 |             for (const_iterator __e = cend(); __f != __l; ++__f) | 
 |                 __tree_.__insert_multi(__e.__i_, *__f); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator erase(const_iterator __p) {return __tree_.erase(__p.__i_);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator erase(iterator __p)       {return __tree_.erase(__p.__i_);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type erase(const key_type& __k) {return __tree_.__erase_multi(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator  erase(const_iterator __f, const_iterator __l) | 
 |         {return __tree_.erase(__f.__i_, __l.__i_);} | 
 |  | 
 | #if _LIBCPP_STD_VER > 14 | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(node_type&& __nh) | 
 |     { | 
 |         _LIBCPP_ASSERT(__nh.empty() || __nh.get_allocator() == get_allocator(), | 
 |             "node_type with incompatible allocator passed to multimap::insert()"); | 
 |         return __tree_.template __node_handle_insert_multi<node_type>( | 
 |             _VSTD::move(__nh)); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator insert(const_iterator __hint, node_type&& __nh) | 
 |     { | 
 |         _LIBCPP_ASSERT(__nh.empty() || __nh.get_allocator() == get_allocator(), | 
 |             "node_type with incompatible allocator passed to multimap::insert()"); | 
 |         return __tree_.template __node_handle_insert_multi<node_type>( | 
 |             __hint.__i_, _VSTD::move(__nh)); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     node_type extract(key_type const& __key) | 
 |     { | 
 |         return __tree_.template __node_handle_extract<node_type>(__key); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     node_type extract(const_iterator __it) | 
 |     { | 
 |         return __tree_.template __node_handle_extract<node_type>( | 
 |             __it.__i_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(multimap<key_type, mapped_type, _Compare2, allocator_type>& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         return __tree_.__node_handle_merge_multi(__source.__tree_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(multimap<key_type, mapped_type, _Compare2, allocator_type>&& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         return __tree_.__node_handle_merge_multi(__source.__tree_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(map<key_type, mapped_type, _Compare2, allocator_type>& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         return __tree_.__node_handle_merge_multi(__source.__tree_); | 
 |     } | 
 |     template <class _Compare2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void merge(map<key_type, mapped_type, _Compare2, allocator_type>&& __source) | 
 |     { | 
 |         _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(), | 
 |                        "merging container with incompatible allocator"); | 
 |         return __tree_.__node_handle_merge_multi(__source.__tree_); | 
 |     } | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void clear() _NOEXCEPT {__tree_.clear();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void swap(multimap& __m) | 
 |         _NOEXCEPT_(__is_nothrow_swappable<__base>::value) | 
 |         {__tree_.swap(__m.__tree_);} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator find(const key_type& __k)             {return __tree_.find(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator find(const key_type& __k) const {return __tree_.find(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,iterator>::type | 
 |     find(const _K2& __k)                           {return __tree_.find(__k);} | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,const_iterator>::type | 
 |     find(const _K2& __k) const                     {return __tree_.find(__k);} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_type      count(const key_type& __k) const | 
 |         {return __tree_.__count_multi(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,size_type>::type | 
 |     count(const _K2& __k) const {return __tree_.__count_multi(__k);} | 
 | #endif | 
 |  | 
 | #if _LIBCPP_STD_VER > 17 | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool contains(const key_type& __k) const {return find(__k) != end();} | 
 | #endif // _LIBCPP_STD_VER > 17 | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator lower_bound(const key_type& __k) | 
 |         {return __tree_.lower_bound(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator lower_bound(const key_type& __k) const | 
 |             {return __tree_.lower_bound(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,iterator>::type | 
 |     lower_bound(const _K2& __k)       {return __tree_.lower_bound(__k);} | 
 |  | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,const_iterator>::type | 
 |     lower_bound(const _K2& __k) const {return __tree_.lower_bound(__k);} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     iterator upper_bound(const key_type& __k) | 
 |             {return __tree_.upper_bound(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     const_iterator upper_bound(const key_type& __k) const | 
 |             {return __tree_.upper_bound(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,iterator>::type | 
 |     upper_bound(const _K2& __k)       {return __tree_.upper_bound(__k);} | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,const_iterator>::type | 
 |     upper_bound(const _K2& __k) const {return __tree_.upper_bound(__k);} | 
 | #endif | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<iterator,iterator>             equal_range(const key_type& __k) | 
 |             {return __tree_.__equal_range_multi(__k);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pair<const_iterator,const_iterator> equal_range(const key_type& __k) const | 
 |             {return __tree_.__equal_range_multi(__k);} | 
 | #if _LIBCPP_STD_VER > 11 | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,pair<iterator,iterator>>::type | 
 |     equal_range(const _K2& __k)       {return __tree_.__equal_range_multi(__k);} | 
 |     template <typename _K2> | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename enable_if<__is_transparent<_Compare, _K2>::value,pair<const_iterator,const_iterator>>::type | 
 |     equal_range(const _K2& __k) const {return __tree_.__equal_range_multi(__k);} | 
 | #endif | 
 |  | 
 | private: | 
 |     typedef typename __base::__node                    __node; | 
 |     typedef typename __base::__node_allocator          __node_allocator; | 
 |     typedef typename __base::__node_pointer            __node_pointer; | 
 |  | 
 |     typedef __map_node_destructor<__node_allocator> _Dp; | 
 |     typedef unique_ptr<__node, _Dp> __node_holder; | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES | 
 | template<class _InputIterator, class _Compare = less<__iter_key_type<_InputIterator>>, | 
 |          class _Allocator = allocator<__iter_to_alloc_type<_InputIterator>>, | 
 |          class = _EnableIf<!__is_allocator<_Compare>::value, void>, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | multimap(_InputIterator, _InputIterator, _Compare = _Compare(), _Allocator = _Allocator()) | 
 |   -> multimap<__iter_key_type<_InputIterator>, __iter_mapped_type<_InputIterator>, _Compare, _Allocator>; | 
 |  | 
 | template<class _Key, class _Tp, class _Compare = less<remove_const_t<_Key>>, | 
 |          class _Allocator = allocator<pair<const _Key, _Tp>>, | 
 |          class = _EnableIf<!__is_allocator<_Compare>::value, void>, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | multimap(initializer_list<pair<_Key, _Tp>>, _Compare = _Compare(), _Allocator = _Allocator()) | 
 |   -> multimap<remove_const_t<_Key>, _Tp, _Compare, _Allocator>; | 
 |  | 
 | template<class _InputIterator, class _Allocator, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | multimap(_InputIterator, _InputIterator, _Allocator) | 
 |   -> multimap<__iter_key_type<_InputIterator>, __iter_mapped_type<_InputIterator>, | 
 |          less<__iter_key_type<_InputIterator>>, _Allocator>; | 
 |  | 
 | template<class _Key, class _Tp, class _Allocator, | 
 |          class = _EnableIf<__is_allocator<_Allocator>::value, void>> | 
 | multimap(initializer_list<pair<_Key, _Tp>>, _Allocator) | 
 |   -> multimap<remove_const_t<_Key>, _Tp, less<remove_const_t<_Key>>, _Allocator>; | 
 | #endif | 
 |  | 
 | #ifndef _LIBCPP_CXX03_LANG | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | multimap<_Key, _Tp, _Compare, _Allocator>::multimap(multimap&& __m, const allocator_type& __a) | 
 |     : __tree_(_VSTD::move(__m.__tree_), typename __base::allocator_type(__a)) | 
 | { | 
 |     if (__a != __m.get_allocator()) | 
 |     { | 
 |         const_iterator __e = cend(); | 
 |         while (!__m.empty()) | 
 |             __tree_.__insert_multi(__e.__i_, | 
 |                     _VSTD::move(__m.__tree_.remove(__m.begin().__i_)->__value_.__move())); | 
 |     } | 
 | } | 
 | #endif | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator==(const multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return __x.size() == __y.size() && _VSTD::equal(__x.begin(), __x.end(), __y.begin()); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator< (const multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return _VSTD::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end()); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator!=(const multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return !(__x == __y); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator> (const multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return __y < __x; | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator>=(const multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return !(__x < __y); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator<=(const multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |            const multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 | { | 
 |     return !(__y < __x); | 
 | } | 
 |  | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(multimap<_Key, _Tp, _Compare, _Allocator>& __x, | 
 |      multimap<_Key, _Tp, _Compare, _Allocator>& __y) | 
 |     _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) | 
 | { | 
 |     __x.swap(__y); | 
 | } | 
 |  | 
 | #if _LIBCPP_STD_VER > 17 | 
 | template <class _Key, class _Tp, class _Compare, class _Allocator, | 
 |           class _Predicate> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 |     typename multimap<_Key, _Tp, _Compare, _Allocator>::size_type | 
 |     erase_if(multimap<_Key, _Tp, _Compare, _Allocator>& __c, | 
 |              _Predicate __pred) { | 
 |   return __libcpp_erase_if_container(__c, __pred); | 
 | } | 
 | #endif | 
 |  | 
 | _LIBCPP_END_NAMESPACE_STD | 
 |  | 
 | #endif  // _LIBCPP_MAP |