Compilare: main.cpp: In member function 'void Trie::insertWord(std::string, int)': main.cpp:20:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 20 | if(s.size() == position) ++cnt; | ~~~~~~~~~^~~~~~~~~~~ main.cpp: In member function 'void Trie::removeWord(std::string, int)': main.cpp:30:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 30 | if(s.size() == position) --cnt; | ~~~~~~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::countWord(std::string, int)': main.cpp:43:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 43 | if(s.size() == position) return cnt; | ~~~~~~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::longestCommonPrefix(std::string, int)': main.cpp:50:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 50 | if(s.size() == position) return 0; | ~~~~~~~~~^~~~~~~~~~~