Iter #10: tensor([[ 4.0384, -4.0929]], grad_fn=<AddBackward0>)
Iter #20: tensor([[-1.1845,  1.4460]], grad_fn=<AddBackward0>)
Iter #30: tensor([[ 1.7006, -1.7151]], grad_fn=<AddBackward0>)
Iter #40: tensor([[ 4.0638, -4.0758]], grad_fn=<AddBackward0>)
Iter #50: tensor([[ 1.3934, -1.4480]], grad_fn=<AddBackward0>)
Iter #60: tensor([[ 2.6505, -2.7565]], grad_fn=<AddBackward0>)
Iter #70: tensor([[ 1.8604, -1.9770]], grad_fn=<AddBackward0>)
Iter #80: tensor([[-2.2578,  2.5248]], grad_fn=<AddBackward0>)
Iter #90: tensor([[-1.2685,  1.2855]], grad_fn=<AddBackward0>)
Iter #100: tensor([[-2.2965,  2.5848]], grad_fn=<AddBackward0>)
Iter #110: tensor([[ 2.8146, -2.9632]], grad_fn=<AddBackward0>)
Iter #120: tensor([[ 1.4236, -1.5110]], grad_fn=<AddBackward0>)
Iter #130: tensor([[ 1.9054, -2.0201]], grad_fn=<AddBackward0>)
Iter #140: tensor([[ 3.9909, -4.0960]], grad_fn=<AddBackward0>)
Iter #150: tensor([[-1.2584,  1.5364]], grad_fn=<AddBackward0>)
Iter #160: tensor([[ 3.7406, -3.8513]], grad_fn=<AddBackward0>)
Iter #170: tensor([[ 1.2291, -1.3053]], grad_fn=<AddBackward0>)
Iter #180: tensor([[ 2.2319, -2.3497]], grad_fn=<AddBackward0>)
Iter #190: tensor([[ 3.0971, -3.2037]], grad_fn=<AddBackward0>)
Iter #200: tensor([[ 1.7477, -1.8915]], grad_fn=<AddBackward0>)
Iter #210: tensor([[ 1.9779, -2.0856]], grad_fn=<AddBackward0>)
Iter #220: tensor([[ 3.5734, -3.7034]], grad_fn=<AddBackward0>)
Iter #230: tensor([[-1.6998,  1.9860]], grad_fn=<AddBackward0>)
Iter #240: tensor([[-1.9589,  2.2450]], grad_fn=<AddBackward0>)
Iter #250: tensor([[-1.9301,  2.2155]], grad_fn=<AddBackward0>)
Iter #260: tensor([[-1.5712,  1.8084]], grad_fn=<AddBackward0>)
Iter #270: tensor([[ 4.2200, -4.2926]], grad_fn=<AddBackward0>)
Iter #280: tensor([[ 2.4343, -2.5067]], grad_fn=<AddBackward0>)
Iter #290: tensor([[ 2.1771, -2.3174]], grad_fn=<AddBackward0>)
Iter #300: tensor([[-1.2522,  1.3997]], grad_fn=<AddBackward0>)
Iter #310: tensor([[ 3.0423, -2.9963]], grad_fn=<AddBackward0>)
Iter #320: tensor([[-2.5034,  2.8410]], grad_fn=<AddBackward0>)
Iter #330: tensor([[ 2.9253, -2.9989]], grad_fn=<AddBackward0>)
Iter #340: tensor([[-0.1058, -0.0060]], grad_fn=<AddBackward0>)
Iter #350: tensor([[ 2.8512, -3.0086]], grad_fn=<AddBackward0>)
Iter #360: tensor([[ 3.3213, -3.4233]], grad_fn=<AddBackward0>)
Iter #370: tensor([[ 2.9060, -3.0068]], grad_fn=<AddBackward0>)
Iter #380: tensor([[-1.0238,  1.0096]], grad_fn=<AddBackward0>)
Iter #390: tensor([[-1.8077,  2.0989]], grad_fn=<AddBackward0>)
Iter #400: tensor([[-2.2325,  2.5516]], grad_fn=<AddBackward0>)
Iter #410: tensor([[ 1.7399, -1.8365]], grad_fn=<AddBackward0>)
