Compilare: user.cpp: In function ‘int BFS()’: user.cpp:27:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘void Djikstra(int, int)’: user.cpp:47:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nivel].size();i++) ^ user.cpp:59:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ^