</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-bottom:0;"><code class="lang-plain">
			<div class=content><span class=sampledata>3<br />
17<br />
2 0<br />
1 0<br />
3 0<br />
6 0<br />
7 0<br />
6 1<br />
7 1<br />
6 2<br />
7 2<br />
6 3<br />
7 3<br />
0 2<br />
0 3<br />
0 6<br />
0 7<br />
1 6<br />
1 7<br />
</span></div></code></pre></