Compilare: main.cpp: In member function 'void Trie::AddWord(const std::string&, int)': main.cpp:20:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | if (pos == word.size()) { | ~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'void Trie::DeleteWord(const std::string&, int)': main.cpp:35:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | if (pos == word.size()) { | ~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'int Trie::CountWord(const std::string&, int)': main.cpp:48:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | if (pos == word.size()) { | ~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'int Trie::GetLongestPref(const std::string&, int)': main.cpp:60:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | if (pos == word.size()) { | ~~~~^~~~~~~~~~~~~~