Eroare de compilare: In file included from /usr/include/c++/12.2.1/set:60, from main.cpp:4: /usr/include/c++/12.2.1/bits/stl_tree.h: In instantiation of 'static const _Key& std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_S_key(_Const_Link_type) [with _Key = elem1; _Val = elem1; _KeyOfValue = std::_Identity<elem1>; _Compare = cmp; _Alloc = std::allocator<elem1>; _Const_Link_type = const std::_Rb_tree_node<elem1>*]': /usr/include/c++/12.2.1/bits/stl_tree.h:2117:47: required from 'std::pair<std::_Rb_tree_node_base*, std::_Rb_tree_node_base*> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_get_insert_unique_pos(const key_type&) [with _Key = elem1; _Val = elem1; _KeyOfValue = std::_Identity<elem1>; _Compare = cmp; _Alloc = std::allocator<elem1>; key_type = elem1]' /usr/include/c++/12.2.1/bits/stl_tree.h:2170:4: required from 'std::pair<std::_Rb_tree_iterator<_Val>, bool> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_unique(_Arg&&) [with _Arg = elem1; _Key = elem1; _Val = elem1; _KeyOfValue = std::_Identity<elem1>; _Compare = cmp; _Alloc = std::allocator<elem1>]' /usr/include/c++/12.2.1/bits/stl_set.h:521:25: required from 'std::pair<typename std::_Rb_tree<_Key, _Key, std::_Identity<_Tp>, _Compare, typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_Key>::other>::const_iterator, bool> std::set<_Key, _Compare, _Alloc>::insert(value_type&&) [with _Key = elem1; _Compare = cmp; _Alloc = std::allocator<elem1>; typename std::_Rb_tree<_Key, _Key, std::_Identity<_Tp>, _Compare, typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_Key>::other>::const_iterator = std::_Rb_tree<elem1, elem1, std::_Identity<elem1>, cmp, std::allocator<elem1> >::const_iterator; typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_Key>::other = std::allocator<elem1>; typename __gnu_cxx::__alloc_traits<_Alloc>::rebind<_Key> = __gnu_cxx::__alloc_traits<std::allocator<elem1>, elem1>::rebind<elem1>; typename _Alloc::value_type = elem1; value_type = elem1]' main.cpp:47:21: required from here /usr/include/c++/12.2.1/bits/stl_tree.h:770:15: error: static assertion failed: comparison object must be invocable as const 770 | is_invocable_v<const _Compare&, const _Key&, const _Key&>, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_tree.h:770:15: note: 'std::is_invocable_v<const cmp&, const elem1&, const elem1&>' evaluates to false Non zero exit status: 1