Compilare: user.cpp: In function ‘void bfs(int*, int)’: user.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:63:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<aux.size(); i++) ~^~~~~~~~~~~ user.cpp:47:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j, nod, nrv=0; ^