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+// -*- C++ -*-
+//===--------------------------- queue ------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_QUEUE
+#define _LIBCPP_QUEUE
+
+/*
+ queue synopsis
+
+namespace std
+{
+
+template <class T, class Container = deque<T>>
+class queue
+{
+public:
+ typedef Container container_type;
+ typedef typename container_type::value_type value_type;
+ typedef typename container_type::reference reference;
+ typedef typename container_type::const_reference const_reference;
+ typedef typename container_type::size_type size_type;
+
+protected:
+ container_type c;
+
+public:
+ queue() = default;
+ ~queue() = default;
+
+ queue(const queue& q) = default;
+ queue(queue&& q) = default;
+
+ queue& operator=(const queue& q) = default;
+ queue& operator=(queue&& q) = default;
+
+ explicit queue(const container_type& c);
+ explicit queue(container_type&& c)
+ template <class Alloc>
+ explicit queue(const Alloc& a);
+ template <class Alloc>
+ queue(const container_type& c, const Alloc& a);
+ template <class Alloc>
+ queue(container_type&& c, const Alloc& a);
+ template <class Alloc>
+ queue(const queue& q, const Alloc& a);
+ template <class Alloc>
+ queue(queue&& q, const Alloc& a);
+
+ bool empty() const;
+ size_type size() const;
+
+ reference front();
+ const_reference front() const;
+ reference back();
+ const_reference back() const;
+
+ void push(const value_type& v);
+ void push(value_type&& v);
+ template <class... Args> reference emplace(Args&&... args); // reference in C++17
+ void pop();
+
+ void swap(queue& q) noexcept(is_nothrow_swappable_v<Container>)
+};
+
+template <class T, class Container>
+ bool operator==(const queue<T, Container>& x,const queue<T, Container>& y);
+
+template <class T, class Container>
+ bool operator< (const queue<T, Container>& x,const queue<T, Container>& y);
+
+template <class T, class Container>
+ bool operator!=(const queue<T, Container>& x,const queue<T, Container>& y);
+
+template <class T, class Container>
+ bool operator> (const queue<T, Container>& x,const queue<T, Container>& y);
+
+template <class T, class Container>
+ bool operator>=(const queue<T, Container>& x,const queue<T, Container>& y);
+
+template <class T, class Container>
+ bool operator<=(const queue<T, Container>& x,const queue<T, Container>& y);
+
+template <class T, class Container>
+ void swap(queue<T, Container>& x, queue<T, Container>& y)
+ noexcept(noexcept(x.swap(y)));
+
+template <class T, class Container = vector<T>,
+ class Compare = less<typename Container::value_type>>
+class priority_queue
+{
+public:
+ typedef Container container_type;
+ typedef typename container_type::value_type value_type;
+ typedef typename container_type::reference reference;
+ typedef typename container_type::const_reference const_reference;
+ typedef typename container_type::size_type size_type;
+
+protected:
+ container_type c;
+ Compare comp;
+
+public:
+ priority_queue() = default;
+ ~priority_queue() = default;
+
+ priority_queue(const priority_queue& q) = default;
+ priority_queue(priority_queue&& q) = default;
+
+ priority_queue& operator=(const priority_queue& q) = default;
+ priority_queue& operator=(priority_queue&& q) = default;
+
+ explicit priority_queue(const Compare& comp);
+ priority_queue(const Compare& comp, const container_type& c);
+ explicit priority_queue(const Compare& comp, container_type&& c);
+ template <class InputIterator>
+ priority_queue(InputIterator first, InputIterator last,
+ const Compare& comp = Compare());
+ template <class InputIterator>
+ priority_queue(InputIterator first, InputIterator last,
+ const Compare& comp, const container_type& c);
+ template <class InputIterator>
+ priority_queue(InputIterator first, InputIterator last,
+ const Compare& comp, container_type&& c);
+ template <class Alloc>
+ explicit priority_queue(const Alloc& a);
+ template <class Alloc>
+ priority_queue(const Compare& comp, const Alloc& a);
+ template <class Alloc>
+ priority_queue(const Compare& comp, const container_type& c,
+ const Alloc& a);
+ template <class Alloc>
+ priority_queue(const Compare& comp, container_type&& c,
+ const Alloc& a);
+ template <class Alloc>
+ priority_queue(const priority_queue& q, const Alloc& a);
+ template <class Alloc>
+ priority_queue(priority_queue&& q, const Alloc& a);
+
+ bool empty() const;
+ size_type size() const;
+ const_reference top() const;
+
+ void push(const value_type& v);
+ void push(value_type&& v);
+ template <class... Args> void emplace(Args&&... args);
+ void pop();
+
+ void swap(priority_queue& q)
+ noexcept(is_nothrow_swappable_v<Container> &&
+ is_nothrow_swappable_v<Comp>)
+};
+
+template <class T, class Container, class Compare>
+ void swap(priority_queue<T, Container, Compare>& x,
+ priority_queue<T, Container, Compare>& y)
+ noexcept(noexcept(x.swap(y)));
+
+} // std
+
+*/
+
+#include <__config>
+#include <deque>
+#include <vector>
+#include <functional>
+#include <algorithm>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp, class _Container = deque<_Tp> > class _LIBCPP_TEMPLATE_VIS queue;
+
+template <class _Tp, class _Container>
+_LIBCPP_INLINE_VISIBILITY
+bool
+operator==(const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y);
+
+template <class _Tp, class _Container>
+_LIBCPP_INLINE_VISIBILITY
+bool
+operator< (const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y);
+
+template <class _Tp, class _Container /*= deque<_Tp>*/>
+class _LIBCPP_TEMPLATE_VIS queue
+{
+public:
+ typedef _Container container_type;
+ typedef typename container_type::value_type value_type;
+ typedef typename container_type::reference reference;
+ typedef typename container_type::const_reference const_reference;
+ typedef typename container_type::size_type size_type;
+ static_assert((is_same<_Tp, value_type>::value), "" );
+
+protected:
+ container_type c;
+
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ queue()
+ _NOEXCEPT_(is_nothrow_default_constructible<container_type>::value)
+ : c() {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ queue(const queue& __q) : c(__q.c) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ queue& operator=(const queue& __q) {c = __q.c; return *this;}
+
+#ifndef _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ queue(queue&& __q)
+ _NOEXCEPT_(is_nothrow_move_constructible<container_type>::value)
+ : c(_VSTD::move(__q.c)) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ queue& operator=(queue&& __q)
+ _NOEXCEPT_(is_nothrow_move_assignable<container_type>::value)
+ {c = _VSTD::move(__q.c); return *this;}
+#endif // _LIBCPP_CXX03_LANG
+
+ _LIBCPP_INLINE_VISIBILITY
+ explicit queue(const container_type& __c) : c(__c) {}
+#ifndef _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ explicit queue(container_type&& __c) : c(_VSTD::move(__c)) {}
+#endif // _LIBCPP_CXX03_LANG
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ explicit queue(const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0)
+ : c(__a) {}
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ queue(const queue& __q, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0)
+ : c(__q.c, __a) {}
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ queue(const container_type& __c, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0)
+ : c(__c, __a) {}
+#ifndef _LIBCPP_CXX03_LANG
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ queue(container_type&& __c, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0)
+ : c(_VSTD::move(__c), __a) {}
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ queue(queue&& __q, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0)
+ : c(_VSTD::move(__q.c), __a) {}
+
+#endif // _LIBCPP_CXX03_LANG
+
+ _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+ bool empty() const {return c.empty();}
+ _LIBCPP_INLINE_VISIBILITY
+ size_type size() const {return c.size();}
+
+ _LIBCPP_INLINE_VISIBILITY
+ reference front() {return c.front();}
+ _LIBCPP_INLINE_VISIBILITY
+ const_reference front() const {return c.front();}
+ _LIBCPP_INLINE_VISIBILITY
+ reference back() {return c.back();}
+ _LIBCPP_INLINE_VISIBILITY
+ const_reference back() const {return c.back();}
+
+ _LIBCPP_INLINE_VISIBILITY
+ void push(const value_type& __v) {c.push_back(__v);}
+#ifndef _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ void push(value_type&& __v) {c.push_back(_VSTD::move(__v));}
+ template <class... _Args>
+ _LIBCPP_INLINE_VISIBILITY
+#if _LIBCPP_STD_VER > 14
+ reference emplace(_Args&&... __args)
+ { return c.emplace_back(_VSTD::forward<_Args>(__args)...);}
+#else
+ void emplace(_Args&&... __args)
+ { c.emplace_back(_VSTD::forward<_Args>(__args)...);}
+#endif
+#endif // _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ void pop() {c.pop_front();}
+
+ _LIBCPP_INLINE_VISIBILITY
+ void swap(queue& __q)
+ _NOEXCEPT_(__is_nothrow_swappable<container_type>::value)
+ {
+ using _VSTD::swap;
+ swap(c, __q.c);
+ }
+
+ template <class _T1, class _C1>
+ friend
+ _LIBCPP_INLINE_VISIBILITY
+ bool
+ operator==(const queue<_T1, _C1>& __x,const queue<_T1, _C1>& __y);
+
+ template <class _T1, class _C1>
+ friend
+ _LIBCPP_INLINE_VISIBILITY
+ bool
+ operator< (const queue<_T1, _C1>& __x,const queue<_T1, _C1>& __y);
+};
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator==(const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y)
+{
+ return __x.c == __y.c;
+}
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator< (const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y)
+{
+ return __x.c < __y.c;
+}
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator!=(const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y)
+{
+ return !(__x == __y);
+}
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator> (const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y)
+{
+ return __y < __x;
+}
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>=(const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y)
+{
+ return !(__x < __y);
+}
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<=(const queue<_Tp, _Container>& __x,const queue<_Tp, _Container>& __y)
+{
+ return !(__y < __x);
+}
+
+template <class _Tp, class _Container>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<
+ __is_swappable<_Container>::value,
+ void
+>::type
+swap(queue<_Tp, _Container>& __x, queue<_Tp, _Container>& __y)
+ _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
+{
+ __x.swap(__y);
+}
+
+template <class _Tp, class _Container, class _Alloc>
+struct _LIBCPP_TEMPLATE_VIS uses_allocator<queue<_Tp, _Container>, _Alloc>
+ : public uses_allocator<_Container, _Alloc>
+{
+};
+
+template <class _Tp, class _Container = vector<_Tp>,
+ class _Compare = less<typename _Container::value_type> >
+class _LIBCPP_TEMPLATE_VIS priority_queue
+{
+public:
+ typedef _Container container_type;
+ typedef _Compare value_compare;
+ typedef typename container_type::value_type value_type;
+ typedef typename container_type::reference reference;
+ typedef typename container_type::const_reference const_reference;
+ typedef typename container_type::size_type size_type;
+ static_assert((is_same<_Tp, value_type>::value), "" );
+
+protected:
+ container_type c;
+ value_compare comp;
+
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue()
+ _NOEXCEPT_(is_nothrow_default_constructible<container_type>::value &&
+ is_nothrow_default_constructible<value_compare>::value)
+ : c(), comp() {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(const priority_queue& __q) : c(__q.c), comp(__q.comp) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue& operator=(const priority_queue& __q)
+ {c = __q.c; comp = __q.comp; return *this;}
+
+#ifndef _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(priority_queue&& __q)
+ _NOEXCEPT_(is_nothrow_move_constructible<container_type>::value &&
+ is_nothrow_move_constructible<value_compare>::value)
+ : c(_VSTD::move(__q.c)), comp(_VSTD::move(__q.comp)) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue& operator=(priority_queue&& __q)
+ _NOEXCEPT_(is_nothrow_move_assignable<container_type>::value &&
+ is_nothrow_move_assignable<value_compare>::value)
+ {c = _VSTD::move(__q.c); comp = _VSTD::move(__q.comp); return *this;}
+#endif // _LIBCPP_CXX03_LANG
+
+ _LIBCPP_INLINE_VISIBILITY
+ explicit priority_queue(const value_compare& __comp)
+ : c(), comp(__comp) {}
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(const value_compare& __comp, const container_type& __c);
+#ifndef _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ explicit priority_queue(const value_compare& __comp, container_type&& __c);
+#endif
+ template <class _InputIter>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(_InputIter __f, _InputIter __l,
+ const value_compare& __comp = value_compare());
+ template <class _InputIter>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(_InputIter __f, _InputIter __l,
+ const value_compare& __comp, const container_type& __c);
+#ifndef _LIBCPP_CXX03_LANG
+ template <class _InputIter>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(_InputIter __f, _InputIter __l,
+ const value_compare& __comp, container_type&& __c);
+#endif // _LIBCPP_CXX03_LANG
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ explicit priority_queue(const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0);
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(const value_compare& __comp, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0);
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(const value_compare& __comp, const container_type& __c,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0);
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(const priority_queue& __q, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0);
+#ifndef _LIBCPP_CXX03_LANG
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(const value_compare& __comp, container_type&& __c,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0);
+ template <class _Alloc>
+ _LIBCPP_INLINE_VISIBILITY
+ priority_queue(priority_queue&& __q, const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type* = 0);
+#endif // _LIBCPP_CXX03_LANG
+
+ _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+ bool empty() const {return c.empty();}
+ _LIBCPP_INLINE_VISIBILITY
+ size_type size() const {return c.size();}
+ _LIBCPP_INLINE_VISIBILITY
+ const_reference top() const {return c.front();}
+
+ _LIBCPP_INLINE_VISIBILITY
+ void push(const value_type& __v);
+#ifndef _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ void push(value_type&& __v);
+ template <class... _Args>
+ _LIBCPP_INLINE_VISIBILITY
+ void emplace(_Args&&... __args);
+#endif // _LIBCPP_CXX03_LANG
+ _LIBCPP_INLINE_VISIBILITY
+ void pop();
+
+ _LIBCPP_INLINE_VISIBILITY
+ void swap(priority_queue& __q)
+ _NOEXCEPT_(__is_nothrow_swappable<container_type>::value &&
+ __is_nothrow_swappable<value_compare>::value);
+};
+
+template <class _Tp, class _Container, class _Compare>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const _Compare& __comp,
+ const container_type& __c)
+ : c(__c),
+ comp(__comp)
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+#ifndef _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const value_compare& __comp,
+ container_type&& __c)
+ : c(_VSTD::move(__c)),
+ comp(__comp)
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+#endif // _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+template <class _InputIter>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(_InputIter __f, _InputIter __l,
+ const value_compare& __comp)
+ : c(__f, __l),
+ comp(__comp)
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+template <class _Tp, class _Container, class _Compare>
+template <class _InputIter>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(_InputIter __f, _InputIter __l,
+ const value_compare& __comp,
+ const container_type& __c)
+ : c(__c),
+ comp(__comp)
+{
+ c.insert(c.end(), __f, __l);
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+#ifndef _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+template <class _InputIter>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(_InputIter __f, _InputIter __l,
+ const value_compare& __comp,
+ container_type&& __c)
+ : c(_VSTD::move(__c)),
+ comp(__comp)
+{
+ c.insert(c.end(), __f, __l);
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+#endif // _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+template <class _Alloc>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type*)
+ : c(__a)
+{
+}
+
+template <class _Tp, class _Container, class _Compare>
+template <class _Alloc>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const value_compare& __comp,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type*)
+ : c(__a),
+ comp(__comp)
+{
+}
+
+template <class _Tp, class _Container, class _Compare>
+template <class _Alloc>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const value_compare& __comp,
+ const container_type& __c,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type*)
+ : c(__c, __a),
+ comp(__comp)
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+template <class _Tp, class _Container, class _Compare>
+template <class _Alloc>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const priority_queue& __q,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type*)
+ : c(__q.c, __a),
+ comp(__q.comp)
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+#ifndef _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+template <class _Alloc>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(const value_compare& __comp,
+ container_type&& __c,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type*)
+ : c(_VSTD::move(__c), __a),
+ comp(__comp)
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+template <class _Tp, class _Container, class _Compare>
+template <class _Alloc>
+inline
+priority_queue<_Tp, _Container, _Compare>::priority_queue(priority_queue&& __q,
+ const _Alloc& __a,
+ typename enable_if<uses_allocator<container_type,
+ _Alloc>::value>::type*)
+ : c(_VSTD::move(__q.c), __a),
+ comp(_VSTD::move(__q.comp))
+{
+ _VSTD::make_heap(c.begin(), c.end(), comp);
+}
+
+#endif // _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+inline
+void
+priority_queue<_Tp, _Container, _Compare>::push(const value_type& __v)
+{
+ c.push_back(__v);
+ _VSTD::push_heap(c.begin(), c.end(), comp);
+}
+
+#ifndef _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+inline
+void
+priority_queue<_Tp, _Container, _Compare>::push(value_type&& __v)
+{
+ c.push_back(_VSTD::move(__v));
+ _VSTD::push_heap(c.begin(), c.end(), comp);
+}
+
+template <class _Tp, class _Container, class _Compare>
+template <class... _Args>
+inline
+void
+priority_queue<_Tp, _Container, _Compare>::emplace(_Args&&... __args)
+{
+ c.emplace_back(_VSTD::forward<_Args>(__args)...);
+ _VSTD::push_heap(c.begin(), c.end(), comp);
+}
+
+#endif // _LIBCPP_CXX03_LANG
+
+template <class _Tp, class _Container, class _Compare>
+inline
+void
+priority_queue<_Tp, _Container, _Compare>::pop()
+{
+ _VSTD::pop_heap(c.begin(), c.end(), comp);
+ c.pop_back();
+}
+
+template <class _Tp, class _Container, class _Compare>
+inline
+void
+priority_queue<_Tp, _Container, _Compare>::swap(priority_queue& __q)
+ _NOEXCEPT_(__is_nothrow_swappable<container_type>::value &&
+ __is_nothrow_swappable<value_compare>::value)
+{
+ using _VSTD::swap;
+ swap(c, __q.c);
+ swap(comp, __q.comp);
+}
+
+template <class _Tp, class _Container, class _Compare>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<
+ __is_swappable<_Container>::value
+ && __is_swappable<_Compare>::value,
+ void
+>::type
+swap(priority_queue<_Tp, _Container, _Compare>& __x,
+ priority_queue<_Tp, _Container, _Compare>& __y)
+ _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
+{
+ __x.swap(__y);
+}
+
+template <class _Tp, class _Container, class _Compare, class _Alloc>
+struct _LIBCPP_TEMPLATE_VIS uses_allocator<priority_queue<_Tp, _Container, _Compare>, _Alloc>
+ : public uses_allocator<_Container, _Alloc>
+{
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_QUEUE