8<br />
1 4 5<br />
4 3 5<br />
1 5 1<br />
5 6 9<br />
5 2 1<br />
2 6 2<br />
6 4 4<br />
1 3<br />
</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><br />
12.5663706144</span></div></code></pre></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">数据范围与提示</h4><div class="ui bott