Compilare: main.cpp: In function 'void addRemove(bool, nod*, std::__cxx11::string, int)': main.cpp:29:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p==word.size()) {n->wC+=mod;return;} ~^~~~~~~~~~~~~ main.cpp: In function 'int queryPref(nod*, std::__cxx11::string, int)': main.cpp:46:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p==word.size()) return p; ~^~~~~~~~~~~~~ main.cpp: In function 'int queryWord(nod*, std::__cxx11::string, int)': main.cpp:53:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p==word.size()) return n->wC; ~^~~~~~~~~~~~~