/div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">// if (num_connected_components == 1) {</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">//   // Graph is completely connected.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span