combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:31:16: error: conversion from 'const char' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
31 | string A = *s.begin(); s.erase(A);
| ^~~~~~~~~~
combo.cpp:31:37: error: no matching function for call to 'std::set<char>::erase(std::string&)'
31 | string A = *s.begin(); s.erase(A);
| ^
In file included from /usr/include/c++/10/set:61,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:87,
from combo.cpp:1:
/usr/include/c++/10/bits/stl_set.h:654:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator]'
654 | erase(const_iterator __position)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:654:28: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::set<char>::const_iterator' {aka 'std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator'}
654 | erase(const_iterator __position)
| ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/10/bits/stl_set.h:684:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::size_type std::set<_Key, _Compare, _Alloc>::erase(const key_type&) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::size_type = long unsigned int; std::set<_Key, _Compare, _Alloc>::key_type = char]'
684 | erase(const key_type& __x)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:684:29: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const key_type&' {aka 'const char&'}
684 | erase(const key_type& __x)
| ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator, std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator]'
706 | erase(const_iterator __first, const_iterator __last)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate expects 2 arguments, 1 provided
combo.cpp:32:16: error: conversion from 'const char' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
32 | string B = *s.begin(); s.erase(B);
| ^~~~~~~~~~
combo.cpp:32:37: error: no matching function for call to 'std::set<char>::erase(std::string&)'
32 | string B = *s.begin(); s.erase(B);
| ^
In file included from /usr/include/c++/10/set:61,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:87,
from combo.cpp:1:
/usr/include/c++/10/bits/stl_set.h:654:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator]'
654 | erase(const_iterator __position)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:654:28: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::set<char>::const_iterator' {aka 'std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator'}
654 | erase(const_iterator __position)
| ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/10/bits/stl_set.h:684:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::size_type std::set<_Key, _Compare, _Alloc>::erase(const key_type&) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::size_type = long unsigned int; std::set<_Key, _Compare, _Alloc>::key_type = char]'
684 | erase(const key_type& __x)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:684:29: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const key_type&' {aka 'const char&'}
684 | erase(const key_type& __x)
| ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator, std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator]'
706 | erase(const_iterator __first, const_iterator __last)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate expects 2 arguments, 1 provided
combo.cpp:33:16: error: conversion from 'const char' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
33 | string C = *s.begin(); s.erase(C);
| ^~~~~~~~~~
combo.cpp:33:37: error: no matching function for call to 'std::set<char>::erase(std::string&)'
33 | string C = *s.begin(); s.erase(C);
| ^
In file included from /usr/include/c++/10/set:61,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:87,
from combo.cpp:1:
/usr/include/c++/10/bits/stl_set.h:654:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator]'
654 | erase(const_iterator __position)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:654:28: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::set<char>::const_iterator' {aka 'std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator'}
654 | erase(const_iterator __position)
| ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/10/bits/stl_set.h:684:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::size_type std::set<_Key, _Compare, _Alloc>::erase(const key_type&) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::size_type = long unsigned int; std::set<_Key, _Compare, _Alloc>::key_type = char]'
684 | erase(const key_type& __x)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:684:29: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const key_type&' {aka 'const char&'}
684 | erase(const key_type& __x)
| ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator, std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = char; _Compare = std::less<char>; _Alloc = std::allocator<char>; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator]'
706 | erase(const_iterator __first, const_iterator __last)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate expects 2 arguments, 1 provided