Compilare: user.cpp: In function ‘void BFS()’: user.cpp:53:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<lista[nod].size(); i++) ^ user.cpp:69:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<lista[nod].size(); i++) ^ user.cpp: In function ‘void afisare()’: user.cpp:89:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<valori.size()-1; i++) ^ user.cpp:96:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<results.size(); i++) ^