124</span>&#160;                <span class="keywordflow">if</span> (res.first &gt; 0) </div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;                        res.second.pop_back();</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        }</div>
<div class="line"><a name="l00128"></a><span cla