Compilare: main.cpp: In function 'void insert(std::__cxx11::string)': main.cpp:29:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < S.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'void dilit(std::__cxx11::string&, int, trieNode*)': main.cpp:41:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(idx == S.size()) ~~~~^~~~~~~~~~~ main.cpp: In function 'int getCntEnd(std::__cxx11::string)': main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < S.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int lgPf(std::__cxx11::string)': main.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < S.size(); i++) ~~^~~~~~~~~~