Compilare: main.cpp: In function 'void Adauga(Trie*, int, int)': main.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if (litera == s.length()) return; | ~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'void Remove(Trie*, int)': main.cpp:53:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | if (litera == s.length()) return; | ~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'void Solution()': main.cpp:85:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for (int j = 0 ; j < s.length() ; ++ j) | ~~^~~~~~~~~~~~ main.cpp:96:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int j = 0 ; j < s.length() ; ++ j) | ~~^~~~~~~~~~~~