Compilare: main.cpp: In member function 'void Trie::add_count(node*, std::string, int)': main.cpp:19:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | if(idx == w.size() ) | ~~~~^~~~~~~~~~~ main.cpp: In member function 'bool Trie::delete_count(node*, std::string&, int)': main.cpp:33:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if (idx == w.size()) { | ~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::word_count(node*, std::string, int)': main.cpp:57:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | if(idx == w.size() ) | ~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::maxpl(node*, std::string, int, int)': main.cpp:69:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | if(idx == w.size() || current->um.find(w[idx] ) == current->um.end()) | ~~~~^~~~~~~~~~~