# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1160619 | 2025-03-02 17:06:24 | Newtonabc | Bubble Sort 2 (JOI18_bubblesort2) | C++20 | Compilation error | 0 ms | 0 KiB |
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#include "bubblesort2.h"
#include<bits/stdc++.h>
using namespace std;
const int N=1<<21;
struct stree{
vector<int> lz,s,arr;
int sz;
void init(int n){
lz.resize(n,0);
s.resize(n,0);
arr.resize(n,0);
}
void pushlz(int l,int r,int idx){
if(!lz[idx]) return;
s[idx]+=lz[idx];
if(l!=r) lz[idx*2]+=lz[idx],lz[idx*2+1]+=lz[idx];
lz[idx]=0;
}
void build(int l,int r,int idx){
if(l==r){
s[idx]=arr[l];
return;
}
int m=(l+r)/2;
build(l,m,idx*2);
build(m+1,r,idx*2+1);
s[idx]=max(s[idx*2],s[idx*2+1]);
}
void update(int l,int r,int idx,int a,int b,int val){
if(a>b) return;
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Compilation message (stderr)
In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_less_val::operator()(_Iterator, _Value&) const [with _Iterator = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _Value = const int]': /usr/include/c++/11/bits/stl_algobase.h:1464:14: required from 'constexpr _ForwardIterator std::__lower_bound(_ForwardIterator, _ForwardIterator, const _Tp&, _Compare) [with _ForwardIterator = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _Tp = int; _Compare = __gnu_cxx::__ops::_Iter_less_val]' /usr/include/c++/11/bits/stl_algobase.h:1499:32: required from 'constexpr _ForwardIterator std::lower_bound(_ForwardIterator, _ForwardIterator, const _Tp&) [with _ForwardIterator = __gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >; _Tp = int]' bubblesort2.cpp:69:18: required from here /usr/include/c++/11/bits/predefined_ops.h:69:22: error: no match for 'operator<' (operand types are 'std::pair<int, int>' and 'const int') 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:1129:5: note: candidate: 'template<class _IteratorL, class _IteratorR, class _Container> constexpr std::__detail::__synth3way_t<_IteratorR, _IteratorL> __gnu_cxx::operator<=>(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)' (reversed) 1129 | operator<=>(const __normal_iterator<_IteratorL, _Container>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:1129:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/regex:63, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110, from bubblesort2.cpp:2: /usr/include/c++/11/bits/regex.h:1244:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Alloc> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)' (reversed) 1244 | operator<=>(const sub_match<_Bi_iter>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/regex.h:1244:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/regex:63, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110, from bubblesort2.cpp:2: /usr/include/c++/11/bits/regex.h:1412:5: note: candidate: 'template<class _Bi_iter> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)' (reversed) 1412 | operator<=>(const sub_match<_Bi_iter>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/regex.h:1412:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/regex:63, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110, from bubblesort2.cpp:2: /usr/include/c++/11/bits/regex.h:1585:5: note: candidate: 'template<class _Bi_iter> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)' (reversed) 1585 | operator<=>(const sub_match<_Bi_iter>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/regex.h:1585:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:538:5: note: candidate: 'template<class _IteratorL, class _IteratorR> requires three_way_comparable_with<_IteratorR, _IteratorL, std::partial_ordering> constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorR>&)' (reversed) 538 | operator<=>(const reverse_iterator<_IteratorL>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:538:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::reverse_iterator<_IteratorL>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:1596:5: note: candidate: 'template<class _IteratorL, class _IteratorR> requires three_way_comparable_with<_IteratorR, _IteratorL, std::partial_ordering> constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)' (reversed) 1596 | operator<=>(const move_iterator<_IteratorL>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:1596:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::move_iterator<_IteratorL>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/basic_string.h:48, from /usr/include/c++/11/string:55, from /usr/include/c++/11/bits/locale_classes.h:40, from /usr/include/c++/11/bits/ios_base.h:41, from /usr/include/c++/11/ios:42, from /usr/include/c++/11/istream:38, from /usr/include/c++/11/sstream:38, from /usr/include/c++/11/complex:45, from /usr/include/c++/11/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54, from bubblesort2.cpp:2: /usr/include/c++/11/string_view:556:5: note: candidate: 'template<class _CharT, class _Traits> constexpr decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(std::basic_string_view<_CharT, _Traits>, std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >)' (reversed) 556 | operator<=>(basic_string_view<_CharT, _Traits> __x, | ^~~~~~~~ /usr/include/c++/11/string_view:556:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/string:55, from /usr/include/c++/11/bits/locale_classes.h:40, from /usr/include/c++/11/bits/ios_base.h:41, from /usr/include/c++/11/ios:42, from /usr/include/c++/11/istream:38, from /usr/include/c++/11/sstream:38, from /usr/include/c++/11/complex:45, from /usr/include/c++/11/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54, from bubblesort2.cpp:2: /usr/include/c++/11/bits/basic_string.h:6276:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)' (reversed) 6276 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/basic_string.h:6276:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/functional:54, from /usr/include/c++/11/pstl/glue_algorithm_defs.h:13, from /usr/include/c++/11/algorithm:74, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:65, from bubblesort2.cpp:2: /usr/include/c++/11/tuple:1557:5: note: candidate: 'template<class ... _Tps, class ... _Ups> constexpr std::common_comparison_category_t<decltype (std::__detail::__synth3way(declval<_Tps&>(), declval<_Ups&>()))...> std::operator<=>(const std::tuple<_Tps ...>&, const std::tuple<_UTypes ...>&)' (reversed) 1557 | operator<=>(const tuple<_Tps...>& __t, const tuple<_Ups...>& __u) | ^~~~~~~~ /usr/include/c++/11/tuple:1557:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::tuple<_Tps ...>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/locale_conv.h:41, from /usr/include/c++/11/locale:43, from /usr/include/c++/11/iomanip:43, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72, from bubblesort2.cpp:2: /usr/include/c++/11/bits/unique_ptr.h:895:5: note: candidate: 'template<class _Tp, class _Dp, class _Up, class _Ep> requires three_way_comparable_with<typename std::unique_ptr<_Tp, _Dp>::pointer, typename std::unique_ptr<_Up, _Ep>::pointer, std::partial_ordering> std::compare_three_way_result_t<typename std::unique_ptr<_Tp, _Dp>::pointer, typename std::unique_ptr<_Up, _Ep>::pointer> std::operator<=>(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)' (reversed) 895 | operator<=>(const unique_ptr<_Tp, _Dp>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/unique_ptr.h:895:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::unique_ptr<_Tp, _Dp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/locale_conv.h:41, from /usr/include/c++/11/locale:43, from /usr/include/c++/11/iomanip:43, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72, from bubblesort2.cpp:2: /usr/include/c++/11/bits/unique_ptr.h:903:5: note: candidate: 'template<class _Tp, class _Dp> requires three_way_comparable<typename std::unique_ptr<_Tp, _Dp>::pointer, std::partial_ordering> std::compare_three_way_result_t<typename std::unique_ptr<_Tp, _Dp>::pointer> std::operator<=>(const std::unique_ptr<_Tp, _Dp>&, std::nullptr_t)' (reversed) 903 | operator<=>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) | ^~~~~~~~ /usr/include/c++/11/bits/unique_ptr.h:903:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::unique_ptr<_Tp, _Dp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/shared_ptr.h:53, from /usr/include/c++/11/memory:77, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82, from bubblesort2.cpp:2: /usr/include/c++/11/bits/shared_ptr_base.h:1422:5: note: candidate: 'template<class _Tp, class _Up, __gnu_cxx::_Lock_policy _Lp> std::strong_ordering std::operator<=>(const std::__shared_ptr<_Tp1, _Lp>&, const std::__shared_ptr<_Tp2, _Lp>&)' (reversed) 1422 | operator<=>(const __shared_ptr<_Tp, _Lp>& __a, | ^~~~~~~~ /usr/include/c++/11/bits/shared_ptr_base.h:1422:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::__shared_ptr<_Tp1, _Lp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/shared_ptr.h:53, from /usr/include/c++/11/memory:77, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82, from bubblesort2.cpp:2: /usr/include/c++/11/bits/shared_ptr_base.h:1428:5: note: candidate: 'template<class _Tp, __gnu_cxx::_Lock_policy _Lp> std::strong_ordering std::operator<=>(const std::__shared_ptr<_Tp, _Lp>&, std::nullptr_t)' (reversed) 1428 | operator<=>(const __shared_ptr<_Tp, _Lp>& __a, nullptr_t) noexcept | ^~~~~~~~ /usr/include/c++/11/bits/shared_ptr_base.h:1428:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::__shared_ptr<_Tp, _Lp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/memory:77, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82, from bubblesort2.cpp:2: /usr/include/c++/11/bits/shared_ptr.h:449:5: note: candidate: 'template<class _Tp, class _Up> std::strong_ordering std::operator<=>(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Tp>&)' (reversed) 449 | operator<=>(const shared_ptr<_Tp>& __a, | ^~~~~~~~ /usr/include/c++/11/bits/shared_ptr.h:449:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::shared_ptr<_Tp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/memory:77, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82, from bubblesort2.cpp:2: /usr/include/c++/11/bits/shared_ptr.h:455:5: note: candidate: 'template<class _Tp> std::strong_ordering std::operator<=>(const std::shared_ptr<_Tp>&, std::nullptr_t)' (reversed) 455 | operator<=>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept | ^~~~~~~~ /usr/include/c++/11/bits/shared_ptr.h:455:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::shared_ptr<_Tp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130, from bubblesort2.cpp:2: /usr/include/c++/11/optional:1096:5: note: candidate: 'template<class _Tp, class _Up> requires three_way_comparable_with<_Up, _Tp, std::partial_ordering> constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::optional<_Tp>&, const std::optional<_Up>&)' (reversed) 1096 | operator<=>(const optional<_Tp>& __x, const optional<_Up>& __y) | ^~~~~~~~ /usr/include/c++/11/optional:1096:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::optional<_Tp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130, from bubblesort2.cpp:2: /usr/include/c++/11/optional:1111:5: note: candidate: 'template<class _Tp> constexpr std::strong_ordering std::operator<=>(const std::optional<_Tp>&, std::nullopt_t)' (reversed) 1111 | operator<=>(const optional<_Tp>& __x, nullopt_t) noexcept | ^~~~~~~~ /usr/include/c++/11/optional:1111:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::optional<_Tp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130, from bubblesort2.cpp:2: /usr/include/c++/11/optional:1253:5: note: candidate: 'template<class _Tp, class _Up> requires !(__is_optional_v<_Up>) && (three_way_comparable_with<_Tp, _Up, std::partial_ordering>) constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::optional<_Tp>&, const _Up&)' (reversed) 1253 | operator<=>(const optional<_Tp>& __x, const _Up& __v) | ^~~~~~~~ /usr/include/c++/11/optional:1253:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::optional<_Tp>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:1146:5: note: candidate: 'template<class _Iterator, class _Container> constexpr std::__detail::__synth3way_t<_T1> __gnu_cxx::operator<=>(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)' (rewritten) 1146 | operator<=>(const __normal_iterator<_Iterator, _Container>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:1146:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/regex:63, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110, from bubblesort2.cpp:2: /usr/include/c++/11/bits/regex.h:1072:5: note: candidate: 'template<class _BiIter> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)' (rewritten) 1072 | operator<=>(const sub_match<_BiIter>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/regex.h:1072:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:64, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_pair.h:473:5: note: candidate: 'template<class _T1, class _T2> constexpr std::common_comparison_category_t<decltype (std::__detail::__synth3way(declval<_T1&>(), declval<_T1&>())), decltype (std::__detail::__synth3way(declval<_T2&>(), declval<_T2&>()))> std::operator<=>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)' (rewritten) 473 | operator<=>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) | ^~~~~~~~ /usr/include/c++/11/bits/stl_pair.h:473:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: mismatched types 'const std::pair<_T1, _T2>' and 'const int' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:554:5: note: candidate: 'template<class _Iterator> requires three_way_comparable<_Iterator, std::partial_ordering> constexpr std::compare_three_way_result_t<_Iterator, _Iterator> std::operator<=>(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorL>&)' (rewritten) 554 | operator<=>(const reverse_iterator<_Iterator>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:554:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::reverse_iterator<_IteratorL>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:1655:5: note: candidate: 'template<class _Iterator> requires three_way_comparable<_Iterator, std::partial_ordering> constexpr std::compare_three_way_result_t<_Iterator, _Iterator> std::operator<=>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)' (rewritten) 1655 | operator<=>(const move_iterator<_Iterator>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:1655:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::move_iterator<_IteratorL>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/vector:67, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_vector.h:1910:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)' (rewritten) 1910 | operator<=>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) | ^~~~~~~~ /usr/include/c++/11/bits/stl_vector.h:1910:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::vector<_Tp, _Alloc>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/basic_string.h:48, from /usr/include/c++/11/string:55, from /usr/include/c++/11/bits/locale_classes.h:40, from /usr/include/c++/11/bits/ios_base.h:41, from /usr/include/c++/11/ios:42, from /usr/include/c++/11/istream:38, from /usr/include/c++/11/sstream:38, from /usr/include/c++/11/complex:45, from /usr/include/c++/11/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54, from bubblesort2.cpp:2: /usr/include/c++/11/string_view:549:5: note: candidate: 'template<class _CharT, class _Traits> constexpr decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(std::basic_string_view<_CharT, _Traits>, std::basic_string_view<_CharT, _Traits>)' (rewritten) 549 | operator<=>(basic_string_view<_CharT, _Traits> __x, | ^~~~~~~~ /usr/include/c++/11/string_view:549:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'std::basic_string_view<_CharT, _Traits>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/string:55, from /usr/include/c++/11/bits/locale_classes.h:40, from /usr/include/c++/11/bits/ios_base.h:41, from /usr/include/c++/11/ios:42, from /usr/include/c++/11/istream:38, from /usr/include/c++/11/sstream:38, from /usr/include/c++/11/complex:45, from /usr/include/c++/11/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54, from bubblesort2.cpp:2: /usr/include/c++/11/bits/basic_string.h:6262:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)' (rewritten) 6262 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | ^~~~~~~~ /usr/include/c++/11/bits/basic_string.h:6262:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/tuple:39, from /usr/include/c++/11/functional:54, from /usr/include/c++/11/pstl/glue_algorithm_defs.h:13, from /usr/include/c++/11/algorithm:74, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:65, from bubblesort2.cpp:2: /usr/include/c++/11/array:282:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr std::__detail::__synth3way_t<_T1> std::operator<=>(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)' (rewritten) 282 | operator<=>(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b) | ^~~~~~~~ /usr/include/c++/11/array:282:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::array<_Tp, _Nm>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/deque:67, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:68, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_deque.h:2265:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)' (rewritten) 2265 | operator<=>(const deque<_Tp, _Alloc>& __x, const deque<_Tp, _Alloc>& __y) | ^~~~~~~~ /usr/include/c++/11/bits/stl_deque.h:2265:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::deque<_Tp, _Alloc>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/list:63, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:79, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_list.h:2065:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::__cxx11::list<_Tp, _Alloc>&, const std::__cxx11::list<_Tp, _Alloc>&)' (rewritten) 2065 | operator<=>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) | ^~~~~~~~ /usr/include/c++/11/bits/stl_list.h:2065:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::list<_Tp, _Alloc>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/map:61, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:81, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_map.h:1484:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> std::__detail::__synth3way_t<std::pair<const _Key, _Tp> > std::operator<=>(const std::map<_Key, _Tp, _Compare, _Allocator>&, const std::map<_Key, _Tp, _Compare, _Allocator>&)' (rewritten) 1484 | operator<=>(const map<_Key, _Tp, _Compare, _Alloc>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_map.h:1484:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::map<_Key, _Tp, _Compare, _Allocator>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/map:62, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:81, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_multimap.h:1149:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> std::__detail::__synth3way_t<std::pair<const _Key, _Tp> > std::operator<=>(const std::multimap<_Key, _Tp, _Compare, _Allocator>&, const std::multimap<_Key, _Tp, _Compare, _Allocator>&)' (rewritten) 1149 | operator<=>(const multimap<_Key, _Tp, _Compare, _Alloc>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_multimap.h:1149:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::multimap<_Key, _Tp, _Compare, _Allocator>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/queue:64, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:86, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_queue.h:392:5: note: candidate: 'template<class _Tp, class _Seq> requires three_way_comparable<_Seq, std::partial_ordering> std::compare_three_way_result_t<_Seq> std::operator<=>(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)' (rewritten) 392 | operator<=>(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y) | ^~~~~~~~ /usr/include/c++/11/bits/stl_queue.h:392:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::queue<_Tp, _Seq>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/set:61, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:87, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_set.h:1006:5: note: candidate: 'template<class _Key, class _Compare, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::set<_Key, _Compare, _Allocator>&, const std::set<_Key, _Compare, _Allocator>&)' (rewritten) 1006 | operator<=>(const set<_Key, _Compare, _Alloc>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_set.h:1006:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::set<_Key, _Compare, _Allocator>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/set:62, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:87, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_multiset.h:992:5: note: candidate: 'template<class _Key, class _Compare, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::multiset<_Key, _Compare, _Allocator>&, const std::multiset<_Key, _Compare, _Allocator>&)' (rewritten) 992 | operator<=>(const multiset<_Key, _Compare, _Alloc>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_multiset.h:992:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::multiset<_Key, _Compare, _Allocator>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/stack:61, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:89, from bubblesort2.cpp:2: /usr/include/c++/11/bits/stl_stack.h:367:5: note: candidate: 'template<class _Tp, class _Seq> requires three_way_comparable<_Seq, std::partial_ordering> std::compare_three_way_result_t<_Seq> std::operator<=>(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)' (rewritten) 367 | operator<=>(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y) | ^~~~~~~~ /usr/include/c++/11/bits/stl_stack.h:367:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::stack<_Tp, _Seq>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/forward_list:38, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:104, from bubblesort2.cpp:2: /usr/include/c++/11/bits/forward_list.h:1446:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::forward_list<_Tp, _Alloc>&, const std::forward_list<_Tp, _Alloc>&)' (rewritten) 1446 | operator<=>(const forward_list<_Tp, _Alloc>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/forward_list.h:1446:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::forward_list<_Tp, _Alloc>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:133, from bubblesort2.cpp:2: /usr/include/c++/11/variant:1246:5: note: candidate: 'template<class ... _Types> requires (three_way_comparable<_Types, std::partial_ordering> && ...) constexpr std::common_comparison_category_t<typename std::__detail::__cmp3way_res_impl<_Types, _Types>::type ...> std::operator<=>(const std::variant<_Types ...>&, const std::variant<_Types ...>&)' (rewritten) 1246 | operator<=>(const variant<_Types...>& __v, const variant<_Types...>& __w) | ^~~~~~~~ /usr/include/c++/11/variant:1246:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::variant<_Types ...>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:142, from bubblesort2.cpp:2: /usr/include/c++/11/coroutine:144:3: note: candidate: 'constexpr std::strong_ordering std::__n4861::operator<=>(std::__n4861::coroutine_handle<void>, std::__n4861::coroutine_handle<void>)' (rewritten) 144 | operator<=>(coroutine_handle<> __a, coroutine_handle<> __b) noexcept | ^~~~~~~~ /usr/include/c++/11/coroutine:144:34: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'std::__n4861::coroutine_handle<void>' 144 | operator<=>(coroutine_handle<> __a, coroutine_handle<> __b) noexcept | ~~~~~~~~~~~~~~~~~~~^~~ In file included from /usr/include/c++/11/bits/ios_base.h:46, from /usr/include/c++/11/ios:42, from /usr/include/c++/11/istream:38, from /usr/include/c++/11/sstream:38, from /usr/include/c++/11/complex:45, from /usr/include/c++/11/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54, from bubblesort2.cpp:2: /usr/include/c++/11/system_error:261:3: note: candidate: 'std::strong_ordering std::operator<=>(const std::error_code&, const std::error_code&)' (rewritten) 261 | operator<=>(const error_code& __lhs, const error_code& __rhs) noexcept | ^~~~~~~~ /usr/include/c++/11/system_error:261:33: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'const std::error_code&' 261 | operator<=>(const error_code& __lhs, const error_code& __rhs) noexcept | ~~~~~~~~~~~~~~~~~~^~~~~ /usr/include/c++/11/system_error:387:3: note: candidate: 'std::strong_ordering std::operator<=>(const std::error_condition&, const std::error_condition&)' (rewritten) 387 | operator<=>(const error_condition& __lhs, | ^~~~~~~~ /usr/include/c++/11/system_error:387:38: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'const std::error_condition&' 387 | operator<=>(const error_condition& __lhs, | ~~~~~~~~~~~~~~~~~~~~~~~^~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:113, from bubblesort2.cpp:2: /usr/include/c++/11/thread:62:3: note: candidate: 'std::strong_ordering std::operator<=>(std::thread::id, std::thread::id)' (rewritten) 62 | operator<=>(thread::id __x, thread::id __y) noexcept | ^~~~~~~~ /usr/include/c++/11/thread:62:26: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'std::thread::id' 62 | operator<=>(thread::id __x, thread::id __y) noexcept | ~~~~~~~~~~~^~~ In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:133, from bubblesort2.cpp:2: /usr/include/c++/11/variant:1269:3: note: candidate: 'constexpr std::strong_ordering std::operator<=>(std::monostate, std::monostate)' (rewritten) 1269 | operator<=>(monostate, monostate) noexcept { return strong_ordering::equal; } | ^~~~~~~~ /usr/include/c++/11/variant:1269:15: note: no known conversion for argument 1 from 'std::pair<int, int>' to 'std::monostate' 1269 | operator<=>(monostate, monostate) noexcept { return strong_ordering::equal; } | ^~~~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:509:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorR>&) requires requires{{std::operator<::__x->base() > std::operator<::__y->base()} -> decltype(auto) [requires std::convertible_to<<placeholder>, bool>];}' 509 | operator<(const reverse_iterator<_IteratorL>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:509:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::reverse_iterator<_IteratorL>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/stl_algobase.h:67, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/stl_iterator.h:1609:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&) requires requires{{std::operator<::__x->base() < std::operator<::__y->base()} -> decltype(auto) [requires std::convertible_to<<placeholder>, bool>];}' 1609 | operator<(const move_iterator<_IteratorL>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/stl_iterator.h:1609:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::move_iterator<_IteratorL>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/locale_conv.h:41, from /usr/include/c++/11/locale:43, from /usr/include/c++/11/iomanip:43, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72, from bubblesort2.cpp:2: /usr/include/c++/11/bits/unique_ptr.h:795:5: note: candidate: 'template<class _Tp, class _Dp, class _Up, class _Ep> bool std::operator<(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)' 795 | operator<(const unique_ptr<_Tp, _Dp>& __x, | ^~~~~~~~ /usr/include/c++/11/bits/unique_ptr.h:795:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/11/bits/stl_algobase.h:71, from /usr/include/c++/11/vector:60, from bubblesort2.h:1, from bubblesort2.cpp:1: /usr/include/c++/11/bits/predefined_ops.h:69:22: note: 'std::pair<int, int>' is not derived from 'const std::unique_ptr<_Tp, _Dp>' 69 | { return *__it < __val; } | ~~~~~~^~~~~~~ In file included from /usr/include/c++/11/bits/locale_conv.h:41, from /usr/include/c++/11/locale:43, from /usr/include/c++/11/iomanip:43, from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72, from bubblesort2.cpp:2: /usr/include/c++/11/bits/unique_ptr.h:807:5: note: candidate: 'template<class _Tp, class _