# Codeblock 5d
    no_object_loss = sse(
        torch.flatten(noobj * target_bbox_confidence),
        torch.flatten(noobj * pred_bbox0_confidence),
    )
    
    no_object_loss += sse(          #(1)
        torch.flatten(noobj * target_bbox_confidence),
        torch.flatten(noobj * pred_bbox1_confidence),
    )