# Codeblock 4 Output
original             : torch.Size([1, 256, 56, 56])
after projection     : torch.Size([1, 512, 28, 28])    #(1)
after conv0-bn0-relu : torch.Size([1, 256, 56, 56])    #(2)
after conv1-bn1-relu : torch.Size([1, 256, 28, 28])    #(3)
after conv2-bn2      : torch.Size([1, 512, 28, 28])    #(4)
after summation      : torch.Size([1, 512, 28, 28])    #(5)