"column"><h4 class="ui top attached block header">输入格式</h4><div class="ui bottom attached segment font-content"><div style="position: relative; overflow: hidden;"><div class=content><div><span style="font-size: 12pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-size: 12pt">第一行</span><span style="font-size: 12pt">N</span><span style="font-size: 12pt">，下接</span><span style="font-size: 12pt">N</span><span style="font-size: 12pt">行每行一个单词。</span></div>
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