Răspuns:
# include <iostream>
using namespace std;
int main ()
{
int A, B, C, D;
cin >> A >> B >> C >> D;
cout << A <<" "<< B << " " << C << " " << D << " ";
cout << D << " " << C << " " << B << " " << A;
return 0;
}
Acesta este codul care executa secventa din cerinta!