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add leetcode problem-cn part3

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<p>给定一个整数数组&nbsp;<code>A</code>,找出索引为 (i, j, k) 的三元组,使得:</p>
<ul>
<li><code>0 &lt;= i &lt; A.length</code></li>
<li><code>0 &lt;= j &lt; A.length</code></li>
<li><code>0 &lt;= k &lt; A.length</code></li>
<li><code>A[i]&nbsp;&amp; A[j]&nbsp;&amp; A[k] == 0</code>,其中&nbsp;<code>&amp;</code>&nbsp;表示按位与AND操作符。</li>
</ul>
<p>&nbsp;</p>
<p><strong>示例:</strong></p>
<pre><strong>输入:</strong>[2,1,3]
<strong>输出:</strong>12
<strong>解释:</strong>我们可以选出如下 i, j, k 三元组:
(i=0, j=0, k=1) : 2 &amp; 2 &amp; 1
(i=0, j=1, k=0) : 2 &amp; 1 &amp; 2
(i=0, j=1, k=1) : 2 &amp; 1 &amp; 1
(i=0, j=1, k=2) : 2 &amp; 1 &amp; 3
(i=0, j=2, k=1) : 2 &amp; 3 &amp; 1
(i=1, j=0, k=0) : 1 &amp; 2 &amp; 2
(i=1, j=0, k=1) : 1 &amp; 2 &amp; 1
(i=1, j=0, k=2) : 1 &amp; 2 &amp; 3
(i=1, j=1, k=0) : 1 &amp; 1 &amp; 2
(i=1, j=2, k=0) : 1 &amp; 3 &amp; 2
(i=2, j=0, k=1) : 3 &amp; 2 &amp; 1
(i=2, j=1, k=0) : 3 &amp; 1 &amp; 2
</pre>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ol>
<li><code>1 &lt;= A.length &lt;= 1000</code></li>
<li><code>0 &lt;= A[i] &lt; 2^16</code></li>
</ol>