</span><span class="identifier">d</span><span class="special">,</span> <span class="identifier">r</span><span class="special">);</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span>
        <span class="special">&lt;&lt;</span> <span class="string">"distance:"</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span>
        <span class="special">&lt;&lt;</sp