Compilare: main.cpp: In function 'void Insert(std::__cxx11::string, int)': main.cpp:72:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<key.size(); i++) ~^~~~~~~~~~~ main.cpp: In function 'void UpdateRelevance(trieNode*, std::__cxx11::string&, int, int)': main.cpp:116:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (depth == key.size()) ~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'void Query(std::__cxx11::string)': main.cpp:164:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<key.size(); i++) ~^~~~~~~~~~~