p">)</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># create a multi-zone problem with a maximum phylogenetic diversity</span></span></span>
<span class="r-in"><span><span class="co"># objective, where the total expenditure in all zones is 5000.</span></span></span>
<span class="r-in"><span><span class="va">p2</span> <span class="op">&lt;-</span></span></span>
<sp