def METHOD_NAME(gen_images, real_images):
    real = real_images.new_full((real_images.shape[0], 1), real_label)
    gen = gen_images.new_full((gen_images.shape[0], 1), fake_label)
    realloss = disc_loss_criterion(disc_net(real_images), real)
    genloss = disc_loss_criterion(disc_net(gen_images.detach()), gen)
    return torch.div(torch.add(realloss, genloss), 2)