combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:33:37: error: no matching function for call to 'std::vector<char>::vector(<brace-enclosed initializer list>)'
33 | vector<char> vec{"A","B","C","D"};
| ^
In file included from /usr/include/c++/10/vector:67,
from /usr/include/c++/10/queue:61,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
from combo.cpp:2:
/usr/include/c++/10/bits/stl_vector.h:653:2: note: candidate: 'template<class _InputIterator, class> std::vector<_Tp, _Alloc>::vector(_InputIterator, _InputIterator, const allocator_type&) [with _InputIterator = _InputIterator; <template-parameter-2-2> = <template-parameter-1-2>; _Tp = char; _Alloc = std::allocator<char>]'
653 | vector(_InputIterator __first, _InputIterator __last,
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:653:2: note: template argument deduction/substitution failed:
combo.cpp:33:37: note: candidate expects 3 arguments, 4 provided
33 | vector<char> vec{"A","B","C","D"};
| ^
In file included from /usr/include/c++/10/vector:67,
from /usr/include/c++/10/queue:61,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
from combo.cpp:2:
/usr/include/c++/10/bits/stl_vector.h:625:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::initializer_list<_Tp>, const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>]'
625 | vector(initializer_list<value_type> __l,
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:625:7: note: candidate expects 2 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:607:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>]'
607 | vector(vector&& __rv, const allocator_type& __m)
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:607:7: note: candidate expects 2 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:589:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::false_type) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>; std::false_type = std::integral_constant<bool, false>]'
589 | vector(vector&& __rv, const allocator_type& __m, false_type)
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:589:7: note: candidate expects 3 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:585:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::true_type) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>; std::true_type = std::integral_constant<bool, true>]'
585 | vector(vector&& __rv, const allocator_type& __m, true_type) noexcept
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:585:7: note: candidate expects 3 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:575:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&, const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>]'
575 | vector(const vector& __x, const allocator_type& __a)
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:575:7: note: candidate expects 2 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:572:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&) [with _Tp = char; _Alloc = std::allocator<char>]'
572 | vector(vector&&) noexcept = default;
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:572:7: note: candidate expects 1 argument, 4 provided
/usr/include/c++/10/bits/stl_vector.h:553:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = char; _Alloc = std::allocator<char>]'
553 | vector(const vector& __x)
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:553:7: note: candidate expects 1 argument, 4 provided
/usr/include/c++/10/bits/stl_vector.h:522:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>::size_type, const value_type&, const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::value_type = char; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>]'
522 | vector(size_type __n, const value_type& __value,
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:522:7: note: candidate expects 3 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:510:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>::size_type, const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>]'
510 | vector(size_type __n, const allocator_type& __a = allocator_type())
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:510:7: note: candidate expects 2 arguments, 4 provided
/usr/include/c++/10/bits/stl_vector.h:497:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<char>]'
497 | vector(const allocator_type& __a) _GLIBCXX_NOEXCEPT
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:497:7: note: candidate expects 1 argument, 4 provided
/usr/include/c++/10/bits/stl_vector.h:487:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector() [with _Tp = char; _Alloc = std::allocator<char>]'
487 | vector() = default;
| ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:487:7: note: candidate expects 0 arguments, 4 provided
combo.cpp:61:17: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
61 | if(SS.size()!=n) SS+=vec[2];
| ~~~~~~~~~^~~