Compilare: user.cpp: In function ‘void Check(int)’: user.cpp:36:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < L[x].size(); i++) ^ user.cpp:33:15: warning: unused variable ‘j’ [-Wunused-variable] int i,adj,j; ^ user.cpp: In function ‘void Build()’: user.cpp:52:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(L[i].size() > v[i] && !viz[i]) Check(i); ^ user.cpp:50:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^