Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:37:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[node].size();i++) ^ user.cpp: In function ‘void Count_Dif(int, int, int)’: user.cpp:60:9: warning: unused variable ‘Max’ [-Wunused-variable] int Max=0; ^ user.cpp:66:9: warning: unused variable ‘first_term’ [-Wunused-variable] int first_term; ^ user.cpp:67:21: warning: unused variable ‘third_term’ [-Wunused-variable] int second_term,third_term,fourth_term; ^ user.cpp:67:32: warning: unused variable ‘fourth_term’ [-Wunused-variable] int second_term,third_term,fourth_term; ^ user.cpp:73:79: warning: ‘second_term’ may be used uninitialized in this function [-Wmaybe-uninitialized] second_term+=DP[1]-(DP[Array[Aux[2]].second]+DP[Array[Aux[1]].second]); ^