Compilare: main.cpp: In member function 'void Trie::del(Node*, std::string, int)': main.cpp:43:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if(cnt <= s.size() - 1) | ~~~~^~~~~~~~~~~~~~~ main.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | if(cnt == s.size()) | ~~~~^~~~~~~~~~~