Compilare: main.cpp: In member function 'void TrieNode::add(const std::string&, int)': main.cpp:25:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if (depth == s.size()) { | ~~~~~~^~~~~~~~~~~ main.cpp: In member function 'int TrieNode::compareTwoWords(const std::string&, const std::string&, int)': main.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | if (depth == s1.size() || depth == s2.size()) { | ~~~~~~^~~~~~~~~~~~ main.cpp:38:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | if (depth == s1.size() || depth == s2.size()) { | ~~~~~~^~~~~~~~~~~~