e"><span class="n">TIME_OPERATION</span></code> is the input size; this is used to label this timing result in the output. The second argument is the expression to evaluate. <code class="language-c++ highlighter-rouge"><span class="n">TIME_OPERATION</span></code> will start a new timer, evaluate the expression, stop the timer, and report the elapsed time.</p>

<p>It is often useful to have a sequence of <code class="language-c++ highlighter-rouge"><span class="n">TIME_OPERATION</span></code> on different si