</span> <span class="identifier">b</span><span class="special">;</span>
            <span class="identifier">std</span><span class="special">::</span><span class="identifier">swap</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">);</span>
        <span class="special">}</span>
    <span class="keyword">private</span><span class="special">:</span>
        <span class="keyword">int</span> <span class="ide