# Codeblock 8 Outputoriginal          : torch.Size([2, 1, 28, 28])timesteps         : torch.Size([2]), tensor([468, 304], device='cuda:0')after double conv : torch.Size([2, 64, 28, 28])  #(1)after pooling     : torch.Size([2, 64, 14, 14])  #(2)