Compilare: main.cpp: In function 'void Insert(std::string, trie*, int)': main.cpp:25:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if(pos == s.length()){ | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'void Delete(std::string, trie*, int)': main.cpp:38:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | if(pos == s.length()) | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int Query1(std::string, trie*, int)': main.cpp:48:12: 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(pos == s.length()) | ~~~~^~~~~~~~~~~~~