Compilare: main.cpp: In function 'void add(Trie*, const string&, int)': main.cpp:17:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()){ ~~~~^~~~~~~~~~~ main.cpp: In function 'void dfs(Trie*, std::vector<int>&)': main.cpp:51:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k<=aux.size() - 1; k++){ ~^~~~~~~~~~~~~~~~ main.cpp:64:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k<=aux.size() - 1; k++){ ~^~~~~~~~~~~~~~~~