net = nn.Sequential(
        nn.Conv2d(1, 64, 3),
        nn.BatchNorm2d(64, momentum=1, affine=True),
        nn.ReLU(inplace=True),
        nn.MaxPool2d(2, 2),
        nn.Conv2d(64, 64, 3),
        nn.BatchNorm2d(64, momentum=1, affine=True),
        nn.ReLU(inplace=True),
        nn.MaxPool2d(2, 2),
        nn.Conv2d(64, 64, 3),
        nn.BatchNorm2d(64, momentum=1, affine=True),
        nn.ReLU(inplace=True),
        nn.MaxPool2d(2,2),
        Flatten(),
        nn.Linear(64, args.n_way)).to(device)