#include
#include
using namespace std;
ostream &ra(ostream &stream)
{
stream << "--> ";
return stream;
}
ostream &la(ostream &stream)
{
stream << " <--";
return stream;
}
int main()
{
cout << "AAA" << ra << 33.23 << endl;
cout << "BBB" << ra << 67.66 << la;
return 0;
}