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    <div class="on-this-page-wrapper-header">On this page</div>
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    <ul>
        <li>
          <a href="#toc_problem">Problem</a>
        </li>
        <li>
          <a href="#toc_solution">Solution</a>
        </li>
        <li>
          <a href="#toc_discussion">Discussion</a>
        </li>
        <li>
          <a href="#toc_example">Example</a>
        </li>
    </ul>
    
  </div>

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</div>
</article>

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