|  | // -*- C++ -*- | 
|  | //===-------------------------- algorithm ---------------------------------===// | 
|  | // | 
|  | // 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_ALGORITHM | 
|  | #define _LIBCPP_ALGORITHM | 
|  |  | 
|  | /* | 
|  | algorithm synopsis | 
|  |  | 
|  | #include <initializer_list> | 
|  |  | 
|  | namespace std | 
|  | { | 
|  |  | 
|  | template <class InputIterator, class Predicate> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | all_of(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template <class InputIterator, class Predicate> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | any_of(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template <class InputIterator, class Predicate> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | none_of(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template <class InputIterator, class Function> | 
|  | constexpr Function          // constexpr in C++20 | 
|  | for_each(InputIterator first, InputIterator last, Function f); | 
|  |  | 
|  | template<class InputIterator, class Size, class Function> | 
|  | constexpr InputIterator     // constexpr in C++20 | 
|  | for_each_n(InputIterator first, Size n, Function f); // C++17 | 
|  |  | 
|  | template <class InputIterator, class T> | 
|  | constexpr InputIterator     // constexpr in C++20 | 
|  | find(InputIterator first, InputIterator last, const T& value); | 
|  |  | 
|  | template <class InputIterator, class Predicate> | 
|  | constexpr InputIterator     // constexpr in C++20 | 
|  | find_if(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template<class InputIterator, class Predicate> | 
|  | constexpr InputIterator     // constexpr in C++20 | 
|  | find_if_not(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr ForwardIterator1  // constexpr in C++20 | 
|  | find_end(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> | 
|  | constexpr ForwardIterator1  // constexpr in C++20 | 
|  | find_end(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2, BinaryPredicate pred); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr ForwardIterator1  // constexpr in C++20 | 
|  | find_first_of(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> | 
|  | constexpr ForwardIterator1  // constexpr in C++20 | 
|  | find_first_of(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2, BinaryPredicate pred); | 
|  |  | 
|  | template <class ForwardIterator> | 
|  | constexpr ForwardIterator   // constexpr in C++20 | 
|  | adjacent_find(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class BinaryPredicate> | 
|  | constexpr ForwardIterator   // constexpr in C++20 | 
|  | adjacent_find(ForwardIterator first, ForwardIterator last, BinaryPredicate pred); | 
|  |  | 
|  | template <class InputIterator, class T> | 
|  | constexpr typename iterator_traits<InputIterator>::difference_type  // constexpr in C++20 | 
|  | count(InputIterator first, InputIterator last, const T& value); | 
|  |  | 
|  | template <class InputIterator, class Predicate> | 
|  | constexpr typename iterator_traits<InputIterator>::difference_type // constexpr in C++20 | 
|  | count_if(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2> | 
|  | constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20 | 
|  | mismatch(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2> | 
|  | constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20 | 
|  | mismatch(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2); // **C++14** | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class BinaryPredicate> | 
|  | constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20 | 
|  | mismatch(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, BinaryPredicate pred); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class BinaryPredicate> | 
|  | constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20 | 
|  | mismatch(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, | 
|  | BinaryPredicate pred); // **C++14** | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | equal(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | equal(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2); // **C++14** | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class BinaryPredicate> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | equal(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, BinaryPredicate pred); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class BinaryPredicate> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | equal(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, | 
|  | BinaryPredicate pred); // **C++14** | 
|  |  | 
|  | template<class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | is_permutation(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2); | 
|  |  | 
|  | template<class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | is_permutation(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2); // **C++14** | 
|  |  | 
|  | template<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | is_permutation(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, BinaryPredicate pred); | 
|  |  | 
|  | template<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> | 
|  | constexpr bool      // constexpr in C++20 | 
|  | is_permutation(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2, | 
|  | BinaryPredicate pred);  // **C++14** | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr ForwardIterator1      // constexpr in C++20 | 
|  | search(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> | 
|  | constexpr ForwardIterator1      // constexpr in C++20 | 
|  | search(ForwardIterator1 first1, ForwardIterator1 last1, | 
|  | ForwardIterator2 first2, ForwardIterator2 last2, BinaryPredicate pred); | 
|  |  | 
|  | template <class ForwardIterator, class Size, class T> | 
|  | constexpr ForwardIterator       // constexpr in C++20 | 
|  | search_n(ForwardIterator first, ForwardIterator last, Size count, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class Size, class T, class BinaryPredicate> | 
|  | constexpr ForwardIterator       // constexpr in C++20 | 
|  | search_n(ForwardIterator first, ForwardIterator last, | 
|  | Size count, const T& value, BinaryPredicate pred); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | copy(InputIterator first, InputIterator last, OutputIterator result); | 
|  |  | 
|  | template<class InputIterator, class OutputIterator, class Predicate> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | copy_if(InputIterator first, InputIterator last, | 
|  | OutputIterator result, Predicate pred); | 
|  |  | 
|  | template<class InputIterator, class Size, class OutputIterator> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | copy_n(InputIterator first, Size n, OutputIterator result); | 
|  |  | 
|  | template <class BidirectionalIterator1, class BidirectionalIterator2> | 
|  | constexpr BidirectionalIterator2      // constexpr in C++20 | 
|  | copy_backward(BidirectionalIterator1 first, BidirectionalIterator1 last, | 
|  | BidirectionalIterator2 result); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr ForwardIterator2    // constexpr in C++20 | 
|  | swap_ranges(ForwardIterator1 first1, ForwardIterator1 last1, ForwardIterator2 first2); | 
|  |  | 
|  | template <class ForwardIterator1, class ForwardIterator2> | 
|  | constexpr void                // constexpr in C++20 | 
|  | iter_swap(ForwardIterator1 a, ForwardIterator2 b); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator, class UnaryOperation> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | transform(InputIterator first, InputIterator last, OutputIterator result, UnaryOperation op); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator, class BinaryOperation> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, | 
|  | OutputIterator result, BinaryOperation binary_op); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr void      // constexpr in C++20 | 
|  | replace(ForwardIterator first, ForwardIterator last, const T& old_value, const T& new_value); | 
|  |  | 
|  | template <class ForwardIterator, class Predicate, class T> | 
|  | constexpr void      // constexpr in C++20 | 
|  | replace_if(ForwardIterator first, ForwardIterator last, Predicate pred, const T& new_value); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator, class T> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | replace_copy(InputIterator first, InputIterator last, OutputIterator result, | 
|  | const T& old_value, const T& new_value); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator, class Predicate, class T> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | replace_copy_if(InputIterator first, InputIterator last, OutputIterator result, Predicate pred, const T& new_value); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr void      // constexpr in C++20 | 
|  | fill(ForwardIterator first, ForwardIterator last, const T& value); | 
|  |  | 
|  | template <class OutputIterator, class Size, class T> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | fill_n(OutputIterator first, Size n, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class Generator> | 
|  | constexpr void      // constexpr in C++20 | 
|  | generate(ForwardIterator first, ForwardIterator last, Generator gen); | 
|  |  | 
|  | template <class OutputIterator, class Size, class Generator> | 
|  | constexpr OutputIterator      // constexpr in C++20 | 
|  | generate_n(OutputIterator first, Size n, Generator gen); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr ForwardIterator     // constexpr in C++20 | 
|  | remove(ForwardIterator first, ForwardIterator last, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class Predicate> | 
|  | constexpr ForwardIterator     // constexpr in C++20 | 
|  | remove_if(ForwardIterator first, ForwardIterator last, Predicate pred); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator, class T> | 
|  | constexpr OutputIterator     // constexpr in C++20 | 
|  | remove_copy(InputIterator first, InputIterator last, OutputIterator result, const T& value); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator, class Predicate> | 
|  | constexpr OutputIterator     // constexpr in C++20 | 
|  | remove_copy_if(InputIterator first, InputIterator last, OutputIterator result, Predicate pred); | 
|  |  | 
|  | template <class ForwardIterator> | 
|  | constexpr ForwardIterator    // constexpr in C++20 | 
|  | unique(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class BinaryPredicate> | 
|  | constexpr ForwardIterator    // constexpr in C++20 | 
|  | unique(ForwardIterator first, ForwardIterator last, BinaryPredicate pred); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator> | 
|  | constexpr OutputIterator     // constexpr in C++20 | 
|  | unique_copy(InputIterator first, InputIterator last, OutputIterator result); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator, class BinaryPredicate> | 
|  | constexpr OutputIterator     // constexpr in C++20 | 
|  | unique_copy(InputIterator first, InputIterator last, OutputIterator result, BinaryPredicate pred); | 
|  |  | 
|  | template <class BidirectionalIterator> | 
|  | constexpr void               // constexpr in C++20 | 
|  | reverse(BidirectionalIterator first, BidirectionalIterator last); | 
|  |  | 
|  | template <class BidirectionalIterator, class OutputIterator> | 
|  | constexpr OutputIterator       // constexpr in C++20 | 
|  | reverse_copy(BidirectionalIterator first, BidirectionalIterator last, OutputIterator result); | 
|  |  | 
|  | template <class ForwardIterator> | 
|  | constexpr ForwardIterator      // constexpr in C++20 | 
|  | rotate(ForwardIterator first, ForwardIterator middle, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class OutputIterator> | 
|  | constexpr OutputIterator       // constexpr in C++20 | 
|  | rotate_copy(ForwardIterator first, ForwardIterator middle, ForwardIterator last, OutputIterator result); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | void | 
|  | random_shuffle(RandomAccessIterator first, RandomAccessIterator last); // deprecated in C++14, removed in C++17 | 
|  |  | 
|  | template <class RandomAccessIterator, class RandomNumberGenerator> | 
|  | void | 
|  | random_shuffle(RandomAccessIterator first, RandomAccessIterator last, | 
|  | RandomNumberGenerator& rand);  // deprecated in C++14, removed in C++17 | 
|  |  | 
|  | template<class PopulationIterator, class SampleIterator, | 
|  | class Distance, class UniformRandomBitGenerator> | 
|  | SampleIterator sample(PopulationIterator first, PopulationIterator last, | 
|  | SampleIterator out, Distance n, | 
|  | UniformRandomBitGenerator&& g); // C++17 | 
|  |  | 
|  | template<class RandomAccessIterator, class UniformRandomNumberGenerator> | 
|  | void shuffle(RandomAccessIterator first, RandomAccessIterator last, | 
|  | UniformRandomNumberGenerator&& g); | 
|  |  | 
|  | template<class ForwardIterator> | 
|  | constexpr ForwardIterator | 
|  | shift_left(ForwardIterator first, ForwardIterator last, | 
|  | typename iterator_traits<ForwardIterator>::difference_type n); // C++20 | 
|  |  | 
|  | template<class ForwardIterator> | 
|  | constexpr ForwardIterator | 
|  | shift_right(ForwardIterator first, ForwardIterator last, | 
|  | typename iterator_traits<ForwardIterator>::difference_type n); // C++20 | 
|  |  | 
|  | template <class InputIterator, class Predicate> | 
|  | constexpr bool  // constexpr in C++20 | 
|  | is_partitioned(InputIterator first, InputIterator last, Predicate pred); | 
|  |  | 
|  | template <class ForwardIterator, class Predicate> | 
|  | constexpr ForwardIterator  // constexpr in C++20 | 
|  | partition(ForwardIterator first, ForwardIterator last, Predicate pred); | 
|  |  | 
|  | template <class InputIterator, class OutputIterator1, | 
|  | class OutputIterator2, class Predicate> | 
|  | constexpr pair<OutputIterator1, OutputIterator2>   // constexpr in C++20 | 
|  | partition_copy(InputIterator first, InputIterator last, | 
|  | OutputIterator1 out_true, OutputIterator2 out_false, | 
|  | Predicate pred); | 
|  |  | 
|  | template <class ForwardIterator, class Predicate> | 
|  | ForwardIterator | 
|  | stable_partition(ForwardIterator first, ForwardIterator last, Predicate pred); | 
|  |  | 
|  | template<class ForwardIterator, class Predicate> | 
|  | constexpr ForwardIterator  // constexpr in C++20 | 
|  | partition_point(ForwardIterator first, ForwardIterator last, Predicate pred); | 
|  |  | 
|  | template <class ForwardIterator> | 
|  | constexpr bool  // constexpr in C++20 | 
|  | is_sorted(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class Compare> | 
|  | constexpr bool  // constexpr in C++20 | 
|  | is_sorted(ForwardIterator first, ForwardIterator last, Compare comp); | 
|  |  | 
|  | template<class ForwardIterator> | 
|  | constexpr ForwardIterator    // constexpr in C++20 | 
|  | is_sorted_until(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class Compare> | 
|  | constexpr ForwardIterator    // constexpr in C++20 | 
|  | is_sorted_until(ForwardIterator first, ForwardIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void               // constexpr in C++20 | 
|  | sort(RandomAccessIterator first, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void               // constexpr in C++20 | 
|  | sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | void | 
|  | stable_sort(RandomAccessIterator first, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | void | 
|  | stable_sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void                    // constexpr in C++20 | 
|  | partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void                    // constexpr in C++20 | 
|  | partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class InputIterator, class RandomAccessIterator> | 
|  | constexpr RandomAccessIterator    // constexpr in C++20 | 
|  | partial_sort_copy(InputIterator first, InputIterator last, | 
|  | RandomAccessIterator result_first, RandomAccessIterator result_last); | 
|  |  | 
|  | template <class InputIterator, class RandomAccessIterator, class Compare> | 
|  | constexpr RandomAccessIterator    // constexpr in C++20 | 
|  | partial_sort_copy(InputIterator first, InputIterator last, | 
|  | RandomAccessIterator result_first, RandomAccessIterator result_last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void                    // constexpr in C++20 | 
|  | nth_element(RandomAccessIterator first, RandomAccessIterator nth, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void                    // constexpr in C++20 | 
|  | nth_element(RandomAccessIterator first, RandomAccessIterator nth, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr ForwardIterator                         // constexpr in C++20 | 
|  | lower_bound(ForwardIterator first, ForwardIterator last, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class T, class Compare> | 
|  | constexpr ForwardIterator                         // constexpr in C++20 | 
|  | lower_bound(ForwardIterator first, ForwardIterator last, const T& value, Compare comp); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr ForwardIterator                         // constexpr in C++20 | 
|  | upper_bound(ForwardIterator first, ForwardIterator last, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class T, class Compare> | 
|  | constexpr ForwardIterator                         // constexpr in C++20 | 
|  | upper_bound(ForwardIterator first, ForwardIterator last, const T& value, Compare comp); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++20 | 
|  | equal_range(ForwardIterator first, ForwardIterator last, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class T, class Compare> | 
|  | constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++20 | 
|  | equal_range(ForwardIterator first, ForwardIterator last, const T& value, Compare comp); | 
|  |  | 
|  | template <class ForwardIterator, class T> | 
|  | constexpr bool                                    // constexpr in C++20 | 
|  | binary_search(ForwardIterator first, ForwardIterator last, const T& value); | 
|  |  | 
|  | template <class ForwardIterator, class T, class Compare> | 
|  | constexpr bool                                    // constexpr in C++20 | 
|  | binary_search(ForwardIterator first, ForwardIterator last, const T& value, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator> | 
|  | constexpr OutputIterator                          // constexpr in C++20 | 
|  | merge(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator, class Compare> | 
|  | constexpr OutputIterator                          // constexpr in C++20 | 
|  | merge(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp); | 
|  |  | 
|  | template <class BidirectionalIterator> | 
|  | void | 
|  | inplace_merge(BidirectionalIterator first, BidirectionalIterator middle, BidirectionalIterator last); | 
|  |  | 
|  | template <class BidirectionalIterator, class Compare> | 
|  | void | 
|  | inplace_merge(BidirectionalIterator first, BidirectionalIterator middle, BidirectionalIterator last, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2> | 
|  | constexpr bool                                    // constexpr in C++20 | 
|  | includes(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class Compare> | 
|  | constexpr bool                                    // constexpr in C++20 | 
|  | includes(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator> | 
|  | constexpr OutputIterator                          // constexpr in C++20 | 
|  | set_union(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator, class Compare> | 
|  | constexpr OutputIterator                          // constexpr in C++20 | 
|  | set_union(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator> | 
|  | constexpr OutputIterator                         // constexpr in C++20 | 
|  | set_intersection(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator, class Compare> | 
|  | constexpr OutputIterator                         // constexpr in C++20 | 
|  | set_intersection(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator> | 
|  | constexpr OutputIterator                         // constexpr in C++20 | 
|  | set_difference(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator, class Compare> | 
|  | constexpr OutputIterator                         // constexpr in C++20 | 
|  | set_difference(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator> | 
|  | constexpr OutputIterator                         // constexpr in C++20 | 
|  | set_symmetric_difference(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class OutputIterator, class Compare> | 
|  | constexpr OutputIterator                         // constexpr in C++20 | 
|  | set_symmetric_difference(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | push_heap(RandomAccessIterator first, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | push_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | pop_heap(RandomAccessIterator first, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | pop_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | make_heap(RandomAccessIterator first, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | make_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | sort_heap(RandomAccessIterator first, RandomAccessIterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr void                                   // constexpr in C++20 | 
|  | sort_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr bool   // constexpr in C++20 | 
|  | is_heap(RandomAccessIterator first, RandomAccessiterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr bool   // constexpr in C++20 | 
|  | is_heap(RandomAccessIterator first, RandomAccessiterator last, Compare comp); | 
|  |  | 
|  | template <class RandomAccessIterator> | 
|  | constexpr RandomAccessIterator   // constexpr in C++20 | 
|  | is_heap_until(RandomAccessIterator first, RandomAccessiterator last); | 
|  |  | 
|  | template <class RandomAccessIterator, class Compare> | 
|  | constexpr RandomAccessIterator   // constexpr in C++20 | 
|  | is_heap_until(RandomAccessIterator first, RandomAccessiterator last, Compare comp); | 
|  |  | 
|  | template <class ForwardIterator> | 
|  | constexpr ForwardIterator        // constexpr in C++14 | 
|  | min_element(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class Compare> | 
|  | constexpr ForwardIterator        // constexpr in C++14 | 
|  | min_element(ForwardIterator first, ForwardIterator last, Compare comp); | 
|  |  | 
|  | template <class T> | 
|  | constexpr const T&               // constexpr in C++14 | 
|  | min(const T& a, const T& b); | 
|  |  | 
|  | template <class T, class Compare> | 
|  | constexpr const T&               // constexpr in C++14 | 
|  | min(const T& a, const T& b, Compare comp); | 
|  |  | 
|  | template<class T> | 
|  | constexpr T                      // constexpr in C++14 | 
|  | min(initializer_list<T> t); | 
|  |  | 
|  | template<class T, class Compare> | 
|  | constexpr T                      // constexpr in C++14 | 
|  | min(initializer_list<T> t, Compare comp); | 
|  |  | 
|  | template<class T> | 
|  | constexpr const T& clamp(const T& v, const T& lo, const T& hi);               // C++17 | 
|  |  | 
|  | template<class T, class Compare> | 
|  | constexpr const T& clamp(const T& v, const T& lo, const T& hi, Compare comp); // C++17 | 
|  |  | 
|  | template <class ForwardIterator> | 
|  | constexpr ForwardIterator        // constexpr in C++14 | 
|  | max_element(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template <class ForwardIterator, class Compare> | 
|  | constexpr ForwardIterator        // constexpr in C++14 | 
|  | max_element(ForwardIterator first, ForwardIterator last, Compare comp); | 
|  |  | 
|  | template <class T> | 
|  | constexpr const T&               // constexpr in C++14 | 
|  | max(const T& a, const T& b); | 
|  |  | 
|  | template <class T, class Compare> | 
|  | constexpr const T&               // constexpr in C++14 | 
|  | max(const T& a, const T& b, Compare comp); | 
|  |  | 
|  | template<class T> | 
|  | constexpr T                      // constexpr in C++14 | 
|  | max(initializer_list<T> t); | 
|  |  | 
|  | template<class T, class Compare> | 
|  | constexpr T                      // constexpr in C++14 | 
|  | max(initializer_list<T> t, Compare comp); | 
|  |  | 
|  | template<class ForwardIterator> | 
|  | constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++14 | 
|  | minmax_element(ForwardIterator first, ForwardIterator last); | 
|  |  | 
|  | template<class ForwardIterator, class Compare> | 
|  | constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++14 | 
|  | minmax_element(ForwardIterator first, ForwardIterator last, Compare comp); | 
|  |  | 
|  | template<class T> | 
|  | constexpr pair<const T&, const T&>  // constexpr in C++14 | 
|  | minmax(const T& a, const T& b); | 
|  |  | 
|  | template<class T, class Compare> | 
|  | constexpr pair<const T&, const T&>  // constexpr in C++14 | 
|  | minmax(const T& a, const T& b, Compare comp); | 
|  |  | 
|  | template<class T> | 
|  | constexpr pair<T, T>                // constexpr in C++14 | 
|  | minmax(initializer_list<T> t); | 
|  |  | 
|  | template<class T, class Compare> | 
|  | constexpr pair<T, T>                // constexpr in C++14 | 
|  | minmax(initializer_list<T> t, Compare comp); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | lexicographical_compare(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2); | 
|  |  | 
|  | template <class InputIterator1, class InputIterator2, class Compare> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | lexicographical_compare(InputIterator1 first1, InputIterator1 last1, | 
|  | InputIterator2 first2, InputIterator2 last2, Compare comp); | 
|  |  | 
|  | template <class BidirectionalIterator> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | next_permutation(BidirectionalIterator first, BidirectionalIterator last); | 
|  |  | 
|  | template <class BidirectionalIterator, class Compare> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | next_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp); | 
|  |  | 
|  | template <class BidirectionalIterator> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | prev_permutation(BidirectionalIterator first, BidirectionalIterator last); | 
|  |  | 
|  | template <class BidirectionalIterator, class Compare> | 
|  | constexpr bool     // constexpr in C++20 | 
|  | prev_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp); | 
|  |  | 
|  | }  // std | 
|  |  | 
|  | */ | 
|  |  | 
|  | #include <__config> | 
|  | #include <__debug> | 
|  | #include <__bits> // __libcpp_clz | 
|  | #include <cstddef> | 
|  | #include <cstring> | 
|  | #include <functional> | 
|  | #include <initializer_list> | 
|  | #include <utility> // needed to provide swap_ranges. | 
|  | #include <memory> | 
|  | #include <iterator> | 
|  | #include <memory> | 
|  | #include <type_traits> | 
|  | #include <utility> // swap_ranges | 
|  | #include <version> | 
|  |  | 
|  | #include <__algorithm/adjacent_find.h> | 
|  | #include <__algorithm/all_of.h> | 
|  | #include <__algorithm/any_of.h> | 
|  | #include <__algorithm/binary_search.h> | 
|  | #include <__algorithm/clamp.h> | 
|  | #include <__algorithm/comp.h> | 
|  | #include <__algorithm/comp_ref_type.h> | 
|  | #include <__algorithm/copy.h> | 
|  | #include <__algorithm/copy_backward.h> | 
|  | #include <__algorithm/copy_if.h> | 
|  | #include <__algorithm/copy_n.h> | 
|  | #include <__algorithm/count.h> | 
|  | #include <__algorithm/count_if.h> | 
|  | #include <__algorithm/equal.h> | 
|  | #include <__algorithm/equal_range.h> | 
|  | #include <__algorithm/fill_n.h> | 
|  | #include <__algorithm/fill.h> | 
|  | #include <__algorithm/find.h> | 
|  | #include <__algorithm/find_end.h> | 
|  | #include <__algorithm/find_first_of.h> | 
|  | #include <__algorithm/find_if.h> | 
|  | #include <__algorithm/find_if_not.h> | 
|  | #include <__algorithm/for_each.h> | 
|  | #include <__algorithm/for_each_n.h> | 
|  | #include <__algorithm/generate_n.h> | 
|  | #include <__algorithm/generate.h> | 
|  | #include <__algorithm/half_positive.h> | 
|  | #include <__algorithm/includes.h> | 
|  | #include <__algorithm/inplace_merge.h> | 
|  | #include <__algorithm/is_heap.h> | 
|  | #include <__algorithm/is_heap_until.h> | 
|  | #include <__algorithm/is_partitioned.h> | 
|  | #include <__algorithm/is_permutation.h> | 
|  | #include <__algorithm/is_sorted.h> | 
|  | #include <__algorithm/is_sorted_until.h> | 
|  | #include <__algorithm/iter_swap.h> | 
|  | #include <__algorithm/lexicographical_compare.h> | 
|  | #include <__algorithm/lower_bound.h> | 
|  | #include <__algorithm/make_heap.h> | 
|  | #include <__algorithm/max.h> | 
|  | #include <__algorithm/max_element.h> | 
|  | #include <__algorithm/merge.h> | 
|  | #include <__algorithm/min.h> | 
|  | #include <__algorithm/min_element.h> | 
|  | #include <__algorithm/minmax.h> | 
|  | #include <__algorithm/minmax_element.h> | 
|  | #include <__algorithm/mismatch.h> | 
|  | #include <__algorithm/move.h> | 
|  | #include <__algorithm/move_backward.h> | 
|  | #include <__algorithm/next_permutation.h> | 
|  | #include <__algorithm/none_of.h> | 
|  | #include <__algorithm/nth_element.h> | 
|  | #include <__algorithm/partial_sort.h> | 
|  | #include <__algorithm/partial_sort_copy.h> | 
|  | #include <__algorithm/partition.h> | 
|  | #include <__algorithm/partition_copy.h> | 
|  | #include <__algorithm/partition_point.h> | 
|  | #include <__algorithm/pop_heap.h> | 
|  | #include <__algorithm/prev_permutation.h> | 
|  | #include <__algorithm/push_heap.h> | 
|  | #include <__algorithm/remove.h> | 
|  | #include <__algorithm/remove_copy.h> | 
|  | #include <__algorithm/remove_copy_if.h> | 
|  | #include <__algorithm/remove_if.h> | 
|  | #include <__algorithm/replace.h> | 
|  | #include <__algorithm/replace_copy.h> | 
|  | #include <__algorithm/replace_copy_if.h> | 
|  | #include <__algorithm/replace_if.h> | 
|  | #include <__algorithm/reverse.h> | 
|  | #include <__algorithm/reverse_copy.h> | 
|  | #include <__algorithm/rotate.h> | 
|  | #include <__algorithm/rotate_copy.h> | 
|  | #include <__algorithm/sample.h> | 
|  | #include <__algorithm/search.h> | 
|  | #include <__algorithm/search_n.h> | 
|  | #include <__algorithm/set_difference.h> | 
|  | #include <__algorithm/set_intersection.h> | 
|  | #include <__algorithm/set_symmetric_difference.h> | 
|  | #include <__algorithm/set_union.h> | 
|  | #include <__algorithm/shift_left.h> | 
|  | #include <__algorithm/shift_right.h> | 
|  | #include <__algorithm/shuffle.h> | 
|  | #include <__algorithm/sift_down.h> | 
|  | #include <__algorithm/sort.h> | 
|  | #include <__algorithm/sort_heap.h> | 
|  | #include <__algorithm/stable_partition.h> | 
|  | #include <__algorithm/stable_sort.h> | 
|  | #include <__algorithm/swap_ranges.h> | 
|  | #include <__algorithm/transform.h> | 
|  | #include <__algorithm/unique_copy.h> | 
|  | #include <__algorithm/unique.h> | 
|  | #include <__algorithm/unwrap_iter.h> | 
|  | #include <__algorithm/upper_bound.h> | 
|  |  | 
|  | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | 
|  | #pragma GCC system_header | 
|  | #endif | 
|  |  | 
|  | _LIBCPP_PUSH_MACROS | 
|  | #include <__undef_macros> | 
|  |  | 
|  | _LIBCPP_POP_MACROS | 
|  |  | 
|  | #if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17 | 
|  | #   include <__pstl_algorithm> | 
|  | #endif | 
|  |  | 
|  | #endif // _LIBCPP_ALGORITHM |