       <span class="bold"><strong><span class="emphasis"><em>a == 1</em></span></strong></span>: A tree forming
          a linked list is considered balanced.
        </li>
<li class="listitem">
          <span class="bold"><strong><span class="emphasis"><em>a == 0.5</em></span></strong></span>: Only a
          perfectly balanced binary is considered balanced.
        </li>
</ul></div>
<p>
      Scapegoat trees are loosely <span class="emphasis"><em>a-height-balanced</em></span> so:
    </p>
<p>
      <sp