"><span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;taskflow/taskflow.hpp&gt;</span>
<span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;taskflow/algorithm/pipeline.hpp&gt;</span>

<span class="c1">// 1st-stage function</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">f1</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">string</sp