Iter #50: tensor([-0.6348], device='cuda:0', grad_fn=<MulBackward0>)
Iter #100: tensor([-0.6592], device='cuda:0', grad_fn=<MulBackward0>)
Iter #150: tensor([-0.8591], device='cuda:0', grad_fn=<MulBackward0>)
Iter #200: tensor([-0.9794], device='cuda:0', grad_fn=<MulBackward0>)
Iter #250: tensor([-0.9782], device='cuda:0', grad_fn=<MulBackward0>)
Iter #300: tensor([-0.9833], device='cuda:0', grad_fn=<MulBackward0>)
Iter #350: tensor([-0.9925], device='cuda:0', grad_fn=<MulBackward0>)
Iter #400: tensor([-0.9916], device='cuda:0', grad_fn=<MulBackward0>)
