input: Write a function to format and justify paragraphs using the justify library.
  assert format_and_justify_paragraphs("This is a test paragraph with improper formatting.") == "This is a test paragraph with improper formatting.\n"
  assert format_and_justify_paragraphs("Another test paragraph that needs to be justified properly.") == "Another test paragraph that needs to be justified properly.\n"
  assert format_and_justify_paragraphs("Yet another paragraph that should be formatted correctly.") == "Yet another paragraph that should be formatted correctly.\n"
output: def format_and_justify_paragraphs(paragraph):
      import justify
      justified_text = justify.justify(paragraph, width=80)
      return justified_text + "\n"