Eroare de compilare: main.cpp: In function 'bool bfs_HK()': main.cpp:23:29: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'int' [-Wsign-compare] 23 | for(unsigned long i=1; i<=m; ++i) | ~^~~ main.cpp: In function 'int main()': main.cpp:104:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | while(j<s.length()) | ~^~~~~~~~~~~ main.cpp:110:27: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::length() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type = long unsigned int]' (did you forget the '()' ?) 110 | while(j<s.length && '0'<s[j] && s[j]<'9') | ~~^~~~~~ | () Non zero exit status: 1