Compilare: user.cpp: In function ‘void BellmanFord(int, int)’: user.cpp:24:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod1].size();i++) ^ user.cpp:15:17: warning: unused variable ‘nod2’ [-Wunused-variable] { int i,n,nod1,nod2; ^ user.cpp:16:5: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] for(i=1;i<=n;i++) ^