Compilare: main.cpp: In function 'void Add(TrieNode*, int, int)': main.cpp:26:13: warning: comparison of integer expressions of different signedness: 'const int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if (pos == s.length()) | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'void Delete(const TrieNode*, int)': main.cpp:51:13: warning: comparison of integer expressions of different signedness: 'const int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | if (pos == s.length()) | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (int c = 0; c < s.length(); c++) | ~~^~~~~~~~~~~~ main.cpp:83:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int c = 0; c < s.length(); c++) | ~~^~~~~~~~~~~~