Compilare: main.cpp: In function 'void addtrie(Trie*&, std::__cxx11::string&, int, int)': main.cpp:34:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pos == s.size()) { ~~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:126:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < order.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp:132:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < original.size(); i++) { ~~^~~~~~~~~~~~~~~~~