drr.io/r/base/c.html">c</a></span><span class="op">(</span><span class="fl">3</span>, <span class="fl">2</span>, <span class="fl">2</span>, <span class="fl">5</span><span class="op">)</span><span class="op">)</span>
<span class="op">)</span>

<span class="co"># User interface</span>
<span class="va">ui</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://shiny.rstudio.com/reference/shiny/latest/fluidPage.html">fluidPage</a></span><span class="op">(</span>
  <span class="fu"><a href="https: