| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1249496 | ammaka | Combo (IOI18_combo) | C++20 | Compilation error | 0 ms | 0 KiB |
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
int press(string p);
std::string guess_sequence(int N) {
int n=N;
vector <string> ve;
ve.pb("X");
ve.pb("Y");
ve.pb("A");
ve.pb("B");
int flg=press("XY");
char pr;
if(flg){
int flg=press("X");
if(flg){
pr="X";
}else{
pr="Y";
}
}else{
int flg=press("A");
if(flg){
pr="A";
}else{
pr="B";
}
}
ve.erase(find(ve.begin(),ve.end(),pr));
for(int i=2;i<n;i++){
int flg=press(pr+ve[0]+pr+ve[1]+ve[0]+pr+ve[1]+ve[2]+pr+ve[1]+ve[1]);
if(flg==i-1){
pr+=ve[2];
}else if(flg==i){
pr+=ve[0];
}else if(flg==i+1){
pr+=ve[1];
}
}
int flg=press(pr+ve[0]);
if(flg==n){
return pr+ve[0];
}
int flg=press(pr+ve[1]);
if(flg==n){
return pr+ve[1];
}else{
return pr+ve[2];
}
}
Compilation message (stderr)
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:18:16: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
18 | pr="X";
| ^~~
| |
| const char*
combo.cpp:20:16: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
20 | pr="Y";
| ^~~
| |
| const char*
combo.cpp:25:16: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
25 | pr="A";
| ^~~
| |
| const char*
combo.cpp:27:16: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
27 | pr="B";
| ^~~
| |
| const char*
combo.cpp:34:15: error: no match for 'operator+=' (operand types are 'char' and '__gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type' {aka 'std::__cxx11::basic_string<char>'})
34 | pr+=ve[2];
combo.cpp:36:15: error: no match for 'operator+=' (operand types are 'char' and '__gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type' {aka 'std::__cxx11::basic_string<char>'})
36 | pr+=ve[0];
combo.cpp:38:15: error: no match for 'operator+=' (operand types are 'char' and '__gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type' {aka 'std::__cxx11::basic_string<char>'})
38 | pr+=ve[1];
combo.cpp:41:9: error: redeclaration of 'int flg'
41 | int flg=press(pr+ve[0]);
| ^~~
combo.cpp:13:9: note: 'int flg' previously declared here
13 | int flg=press("XY");
| ^~~
combo.cpp:45:9: error: redeclaration of 'int flg'
45 | int flg=press(pr+ve[1]);
| ^~~
combo.cpp:13:9: note: 'int flg' previously declared here
13 | int flg=press("XY");
| ^~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_equals_val<_Value>::operator()(_Iterator) [with _Iterator = __gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >; _Value = const char]':
/usr/include/c++/11/bits/stl_algobase.h:2069:14: required from 'constexpr _RandomAccessIterator std::__find_if(_RandomAccessIterator, _RandomAccessIterator, _Predicate, std::random_access_iterator_tag) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >; _Predicate = __gnu_cxx::__ops::_Iter_equals_val<const char>]'
/usr/include/c++/11/bits/stl_algobase.h:2114:23: required from 'constexpr _Iterator std::__find_if(_Iterator, _Iterator, _Predicate) [with _Iterator = __gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >; _Predicate = __gnu_cxx::__ops::_Iter_equals_val<const char>]'
/usr/include/c++/11/bits/stl_algo.h:3884:28: required from 'constexpr _IIter std::find(_IIter, _IIter, const _Tp&) [with _IIter = __gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >; _Tp = char]'
combo.cpp:30:18: required from here
/usr/include/c++/11/bits/predefined_ops.h:270:24: error: no match for 'operator==' (operand types are 'std::__cxx11::basic_string<char>' and 'const char')
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:1122:5: note: candidate: 'template<class _IteratorL, class _IteratorR, class _Container> requires requires(_IteratorL __lhs, _IteratorR __rhs) {{__lhs == __rhs} -> decltype(auto) [requires std::convertible_to<<placeholder>, bool>];} constexpr bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)' (reversed)
1122 | operator==(const __normal_iterator<_IteratorL, _Container>& __lhs,
| ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1122:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/c++allocator.h:33,
from /usr/include/c++/11/bits/allocator.h:46,
from /usr/include/c++/11/string:41,
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 combo.cpp:1:
/usr/include/c++/11/ext/new_allocator.h:183:9: note: candidate: 'template<class _Up> constexpr bool __gnu_cxx::operator==(const __gnu_cxx::new_allocator<char>&, const __gnu_cxx::new_allocator<_Tp>&)' (reversed)
183 | operator==(const new_allocator&, const new_allocator<_Up>&)
| ^~~~~~~~
/usr/include/c++/11/ext/new_allocator.h:183:9: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const __gnu_cxx::new_allocator<_Tp>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:495:5: 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>];}' (reversed)
495 | operator==(const reverse_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:495:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::reverse_iterator<_IteratorL>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:1585:5: 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>];}' (reversed)
1585 | operator==(const move_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.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/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::move_iterator<_IteratorL>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/string:41,
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 combo.cpp:1:
/usr/include/c++/11/bits/allocator.h:218:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_T2>&)' (reversed)
218 | operator==(const allocator<_T1>&, const allocator<_T2>&)
| ^~~~~~~~
/usr/include/c++/11/bits/allocator.h:218:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::allocator<_CharT>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/string_view:541:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(std::basic_string_view<_CharT, _Traits>, std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >)' (reversed)
541 | operator==(basic_string_view<_CharT, _Traits> __x,
| ^~~~~~~~
/usr/include/c++/11/string_view:541:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/bits/basic_string.h:6248:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)' (reversed)
6248 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/11/bits/basic_string.h:6248:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
from combo.cpp:1:
/usr/include/c++/11/complex:469:5: note: candidate: 'template<class _Tp> constexpr bool std::operator==(const std::complex<_Tp>&, const _Tp&)' (reversed)
469 | operator==(const complex<_Tp>& __x, const _Tp& __y)
| ^~~~~~~~
/usr/include/c++/11/complex:469:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::complex<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/tuple:1524:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator==(const std::tuple<_Tps ...>&, const std::tuple<_UTypes ...>&)' (reversed)
1524 | operator==(const tuple<_TElements...>& __t,
| ^~~~~~~~
/usr/include/c++/11/tuple:1524:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::tuple<_Tps ...>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/functional:59,
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 combo.cpp:1:
/usr/include/c++/11/bits/std_function.h:718:5: note: candidate: 'template<class _Res, class ... _Args> bool std::operator==(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t)' (reversed)
718 | operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/11/bits/std_function.h:718:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::function<_Res(_ArgTypes ...)>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/bits/unique_ptr.h:753:5: 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>&)' (reversed)
753 | operator==(const unique_ptr<_Tp, _Dp>& __x,
| ^~~~~~~~
/usr/include/c++/11/bits/unique_ptr.h:753:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::unique_ptr<_Tp, _Dp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/bits/unique_ptr.h:760:5: note: candidate: 'template<class _Tp, class _Dp> bool std::operator==(const std::unique_ptr<_Tp, _Dp>&, std::nullptr_t)' (reversed)
760 | operator==(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/11/bits/unique_ptr.h:760:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::unique_ptr<_Tp, _Dp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/bits/shared_ptr_base.h:1410:5: note: candidate: 'template<class _Tp1, class _Tp2, __gnu_cxx::_Lock_policy _Lp> bool std::operator==(const std::__shared_ptr<_Tp1, _Lp>&, const std::__shared_ptr<_Tp2, _Lp>&)' (reversed)
1410 | operator==(const __shared_ptr<_Tp1, _Lp>& __a,
| ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr_base.h:1410:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::__shared_ptr<_Tp1, _Lp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/bits/shared_ptr_base.h:1416:5: note: candidate: 'template<class _Tp, __gnu_cxx::_Lock_policy _Lp> bool std::operator==(const std::__shared_ptr<_Tp, _Lp>&, std::nullptr_t)' (reversed)
1416 | operator==(const __shared_ptr<_Tp, _Lp>& __a, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr_base.h:1416:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::__shared_ptr<_Tp, _Lp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/memory:77,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82,
from combo.cpp:1:
/usr/include/c++/11/bits/shared_ptr.h:437:5: note: candidate: 'template<class _Tp, class _Up> bool std::operator==(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Tp>&)' (reversed)
437 | operator==(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
| ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr.h:437:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::shared_ptr<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/memory:77,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82,
from combo.cpp:1:
/usr/include/c++/11/bits/shared_ptr.h:443:5: note: candidate: 'template<class _Tp> bool std::operator==(const std::shared_ptr<_Tp>&, std::nullptr_t)' (reversed)
443 | operator==(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr.h:443:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::shared_ptr<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:417:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__equal_to, typename _Dom1::value_type>::result_type> std::operator==(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)' (reversed)
417 | _DEFINE_EXPR_BINARY_OPERATOR(==, struct std::__equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:417:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:417:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__equal_to, typename _Dom1::value_type>::result_type> std::operator==(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)' (reversed)
417 | _DEFINE_EXPR_BINARY_OPERATOR(==, struct std::__equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:417:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:417:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__equal_to, typename _Dom1::value_type>::result_type> std::operator==(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)' (reversed)
417 | _DEFINE_EXPR_BINARY_OPERATOR(==, struct std::__equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:417:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:417:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__equal_to, typename _Dom1::value_type>::result_type> std::operator==(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)' (reversed)
417 | _DEFINE_EXPR_BINARY_OPERATOR(==, struct std::__equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:417:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:417:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__equal_to, typename _Dom1::value_type>::result_type> std::operator==(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)' (reversed)
417 | _DEFINE_EXPR_BINARY_OPERATOR(==, struct std::__equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:417:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/valarray:1198:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__equal_to, _Tp>::result_type> std::operator==(const std::valarray<_Tp>&, const typename std::valarray<_Tp>::value_type&)' (reversed)
1198 | _DEFINE_BINARY_OPERATOR(==, __equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/valarray:1198:1: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::valarray<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from combo.cpp:1:
/usr/include/c++/11/valarray:1198:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__equal_to, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__equal_to, _Tp>::result_type> std::operator==(const typename std::valarray<_Tp>::value_type&, const std::valarray<_Tp>&)' (reversed)
1198 | _DEFINE_BINARY_OPERATOR(==, __equal_to)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/valarray:1198:1: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::valarray<_Tp>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:111,
from combo.cpp:1:
/usr/include/c++/11/scoped_allocator:499:5: note: candidate: 'template<class _OutA1, class _OutA2, class ... _InA> bool std::operator==(const std::scoped_allocator_adaptor<_OutA1, _InA ...>&, const std::scoped_allocator_adaptor<_InnerHead, _InnerTail ...>&)' (reversed)
499 | operator==(const scoped_allocator_adaptor<_OutA1, _InA...>& __a,
| ^~~~~~~~
/usr/include/c++/11/scoped_allocator:499:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::scoped_allocator_adaptor<_OutA1, _InA ...>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
from combo.cpp:1:
/usr/include/c++/11/optional:1045:5: note: candidate: 'template<class _Tp, class _Up> constexpr std::__optional_eq_t<_Tp, _Up> std::operator==(const std::optional<_Tp>&, const std::optional<_Up>&)' (reversed)
1045 | operator==(const optional<_Tp>& __lhs, const optional<_Up>& __rhs)
| ^~~~~~~~
/usr/include/c++/11/optional:1045:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::optional<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
from combo.cpp:1:
/usr/include/c++/11/optional:1105:5: note: candidate: 'template<class _Tp> constexpr bool std::operator==(const std::optional<_Tp>&, std::nullopt_t)' (reversed)
1105 | operator==(const optional<_Tp>& __lhs, nullopt_t) noexcept
| ^~~~~~~~
/usr/include/c++/11/optional:1105:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::optional<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
from combo.cpp:1:
/usr/include/c++/11/optional:1173:5: note: candidate: 'template<class _Tp, class _Up> constexpr std::__optional_eq_t<_Tp, _Up> std::operator==(const std::optional<_Tp>&, const _Up&)' (reversed)
1173 | operator==(const optional<_Tp>& __lhs, const _Up& __rhs)
| ^~~~~~~~
/usr/include/c++/11/optional:1173:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::optional<_Tp>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
from combo.cpp:1:
/usr/include/c++/11/optional:1179:5: note: candidate: 'template<class _Tp, class _Up> constexpr std::__optional_eq_t<_Up, _Tp> std::operator==(const _Up&, const std::optional<_Tp>&)' (reversed)
1179 | operator==(const _Up& __lhs, const optional<_Tp>& __rhs)
| ^~~~~~~~
/usr/include/c++/11/optional:1179:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::optional<_Tp>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/regex:63,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
from combo.cpp:1:
/usr/include/c++/11/bits/regex.h:1230:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)' (reversed)
1230 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1230:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/regex:63,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
from combo.cpp:1:
/usr/include/c++/11/bits/regex.h:1397:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)' (reversed)
1397 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1397:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/regex:63,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
from combo.cpp:1:
/usr/include/c++/11/bits/regex.h:1569:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)' (reversed)
1569 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1569:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'const char'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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 combo.cpp:1:
/usr/include/c++/11/system_error:368:3: note: candidate: 'bool std::operator==(const std::error_code&, const std::error_condition&)' (reversed)
368 | operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
| ^~~~~~~~
/usr/include/c++/11/system_error:368:32: note: no known conversion for argument 1 from 'const char' to 'const std::error_code&'
368 | operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
| ~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:1136:5: note: candidate: 'template<class _Iterator, class _Container> constexpr bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&) requires requires{{__gnu_cxx::operator==::__lhs->base() == __gnu_cxx::operator==::__rhs->base()} -> decltype(auto) [requires std::convertible_to<<placeholder>, bool>];}'
1136 | operator==(const __normal_iterator<_Iterator, _Container>& __lhs,
| ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1136:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:64,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:466:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
466 | operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
| ^~~~~~~~
/usr/include/c++/11/bits/stl_pair.h:466:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::pair<_T1, _T2>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:547:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorL>&) requires requires{{std::operator==::__x->base() == std::operator==::__y->base()} -> decltype(auto) [requires std::convertible_to<<placeholder>, bool>];}'
547 | operator==(const reverse_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:547:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::reverse_iterator<_IteratorL>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:1648:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
1648 | operator==(const move_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1648:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::move_iterator<_IteratorL>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
In file included from /usr/include/c++/11/iosfwd:40,
from /usr/include/c++/11/ios:38,
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 combo.cpp:1:
/usr/include/c++/11/bits/postypes.h:222:5: note: candidate: 'template<class _StateT> bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&)'
222 | operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
| ^~~~~~~~
/usr/include/c++/11/bits/postypes.h:222:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h:270:24: note: 'std::__cxx11::basic_string<char>' is not derived from 'const std::fpos<_StateT>'
270 | { return *__it == _M_value; }
| ~~~~~~^~~~~~~~~~~
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