 class="memname"><a class="el" href="a00074.html#a9142822eba184f2778b6aac70b0900b3">Cost</a> potential </td>
          <td>(</td>
          <td class="paramtype">const Node &amp;&#160;</td>
          <td class="paramname"><em>n</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>This function returns the potential (dual value) of th