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"translatedContent": "<p>索引从<code>0</code>开始长度为<code>N</code>的数组<code>A</code>,包含<code>0</code>到<code>N - 1</code>的所有整数。找到最大的集合<code>S</code>并返回其大小,其中 <code>S[i] = {A[i], A[A[i]], A[A[A[i]]], ... }</code>且遵守以下的规则。</p>\n\n<p>假设选择索引为<code>i</code>的元素<code>A[i]</code>为<code>S</code>的第一个元素,<code>S</code>的下一个元素应该是<code>A[A[i]]</code>,之后是<code>A[A[A[i]]]...</code> 以此类推,不断添加直到<code>S</code>出现重复的元素。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例&nbsp;1:</strong></p>\n\n<pre><strong>输入:</strong> A = [5,4,0,3,1,6,2]\n<strong>输出:</strong> 4\n<strong>解释:</strong> \nA[0] = 5, A[1] = 4, A[2] = 0, A[3] = 3, A[4] = 1, A[5] = 6, A[6] = 2.\n\n其中一种最长的 S[K]:\nS[0] = {A[0], A[5], A[6], A[2]} = {5, 6, 2, 0}\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ol>\n\t<li><code>N</code>是<code>[1, 20,000]</code>之间的整数。</li>\n\t<li><code>A</code>中不含有重复的元素。</li>\n\t<li><code>A</code>中的元素大小在<code>[0, N-1]</code>之间。</li>\n</ol>\n",
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