lass=content><div style="text-indent: 21pt"><span style="font-size: 10.5pt">输出包含一行，最坏情况下最少需要多少时间。</span></div>
<div style="text-indent: 21pt">&nbsp;</div></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">样例</h4><div class="ui bottom attached segment font-content"><div style="position: relative; overflow: hidden;"><h4>样例输入</h4><div class="ui existing segment"><pre style="margin-top:0; margin-botto