<div class="ui bottom attached segment font-content"><div style="position: relative; overflow: hidden;"><p><img alt="" src="upload/201406/11(3).jpg" /></p></div></div></div></div><div class="row"><div class="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><p><span style="font-size: medium">* 第一行: 两个空格分开的数, N和M </span></p>
<p><span style="font-s