Compilare: main.cpp: In function 'void inserare(std::__cxx11::string&)': main.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++) ~^~~~~~~~~ main.cpp: In function 'bool del(std::__cxx11::string&, trie*, int)': main.cpp:28:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v.size()==poz) ~~~~~~~~^~~~~ main.cpp: In function 'int de_cate_ori_o_aparut(std::__cxx11::string&, trie*, int)': main.cpp:46:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v.size()==poz) ~~~~~~~~^~~~~ main.cpp: In function 'int lg_max(std::__cxx11::string&)': main.cpp:61:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++) ~^~~~~~~~~