i have three tensors. First one, lets say ‘a’ has a dimension of `(15, 128)`

. Second one, ‘b’ has dimension `(2, 128)`

and third one ‘c’ has dimension `(417, 128)`

.

Now i want to add them like,

```
d = a+b+c
```

I do not want to concatenate or stack them. I just want to add them because i want

d should have dimension of `(417,128)`

. How can i do this in pytorch?

This is the error i get:

```
a = torch.randn(2,128)
b = torch.randn(15,128)
c = torch.randn(417,128)
d = a+b+c
RuntimeError: The size of tensor a (2) must match the size of tensor b (15) at non-singleton dimension.
```