ass="op"><a href="pipe.html">%&gt;%</a></span></span></span>
<span class="r-in"><span>     <span class="fu"><a href="add_default_solver.html">add_default_solver</a></span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># print problem</span></span></span>
<span class="r-in"><span><span class="fu"><a href="print.html">print</a></span><span class="op">(</span><span class="va">p</span><span class="op">)</span></s