Compilare: main.cpp: In function 'void Add(trie*, std::string, int)': main.cpp:32:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | if(k > s.length()) | ~~^~~~~~~~~~~~ main.cpp:42:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | if(k == s.length() - 1) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void Del(trie*, std::string, int)': main.cpp:48:11: 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(k > s.length()) | ~~^~~~~~~~~~~~ main.cpp:59:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | if(k == s.length() - 1 && T -> son[pos] -> NrOfWords) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int NrAp(trie*, std::string, int)': main.cpp:70:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | if(k == s.length() - 1) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int MaxLength(trie*, std::string, int)': main.cpp:84:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | if(k == s.length() - 1 && T -> son[pos] -> howMany) | ~~^~~~~~~~~~~~~~~~~