          <td class="paramname"><em>node</em></td><td>)</td>
          <td> const</td>
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<p>This function returns the predecessor node of the given node in the Gomory-Hu tree. If <code>node</code> is the root of the tree, then it returns <code>INVALID</code>.</p>
<dl class="section pre"><dt>Precondition</dt><dd><a class="el" href="