Compilare: main.cpp: In member function 'void Trie::adauga(std::string&, int)': main.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if (index >= s.size()) | ~~~~~~^~~~~~~~~~~ main.cpp: In member function 'void Trie::elimina(std::string&, int)': main.cpp:47:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | if (index >= s.size()) | ~~~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::numarare(std::string&, int)': main.cpp:67:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | if (index >= s.size()) | ~~~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::sol(std::string&, int)': main.cpp:78:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | if (index >= s.size()) | ~~~~~~^~~~~~~~~~~