gment font-content"><div style="position: relative; overflow: hidden;"><p><img height="196" width="770" alt="" src="upload/201306/1(4).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">一行，一个字符串S</span></p></div></div></div></div></div><div class="row"><div c