Compilare: main.cpp: In function 'void bfs()': main.cpp:34:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf[nou].size();i++) ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<strlen(cod);j++) ~^~~~~~~~~~~~