=content><span class=sampledata>5 6<br />
......<br />
..X..X<br />
X..X..<br />
......<br />
..X...</span></div></code></pre></div><h4>样例输出</h4><div class="ui existing segment"><pre style="margin-top:0; margin-bottom:0;"><code class="lang-plain">
			<div class=content><span class=sampledata>16<br />
In the example, the placement of the optimal frame is indicated by 'f's below:<br />
.ffff.<br />
.fX.fX<br />
Xf.Xf.<br />
.ffff.<br />
..X...</span></div></code></pre></div></div></div></di