<span class="op">{</span></span>
<span>    <span class="va">a</span> <span class="op">&lt;-</span> <span class="va">par</span><span class="op">[</span><span class="fl">1</span><span class="op">]</span></span>
<span>    <span class="va">b</span> <span class="op">&lt;-</span> <span class="va">par</span><span class="op">[</span><span class="fl">2</span><span class="op">]</span></span>
<span>    <span class="va">TP</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/nrow.html" 