leetcode-problemset/leetcode-cn/originData/maximum-sum-of-almost-unique-subarray.json

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            "title": "Maximum Sum of Almost Unique Subarray",
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            "content": "<p>You are given an integer array <code>nums</code> and two positive integers <code>m</code> and <code>k</code>.</p>\n\n<p>Return <em>the <strong>maximum sum</strong> out of all <strong>almost unique</strong> subarrays of length </em><code>k</code><em> of</em> <code>nums</code>. If no such subarray exists, return <code>0</code>.</p>\n\n<p>A subarray of <code>nums</code> is <strong>almost unique</strong> if it contains at least <code>m</code> distinct elements.</p>\n\n<p>A subarray is a contiguous <strong>non-empty</strong> sequence of elements within an array.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [2,6,7,3,1,7], m = 3, k = 4\n<strong>Output:</strong> 18\n<strong>Explanation:</strong> There are 3 almost unique subarrays of size <code>k = 4</code>. These subarrays are [2, 6, 7, 3], [6, 7, 3, 1], and [7, 3, 1, 7]. Among these subarrays, the one with the maximum sum is [2, 6, 7, 3] which has a sum of 18.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [5,9,9,2,4,5,4], m = 1, k = 3\n<strong>Output:</strong> 23\n<strong>Explanation:</strong> There are 5 almost unique subarrays of size k. These subarrays are [5, 9, 9], [9, 9, 2], [9, 2, 4], [2, 4, 5], and [4, 5, 4]. Among these subarrays, the one with the maximum sum is [5, 9, 9] which has a sum of 23.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,2,1,2,1,2,1], m = 3, k = 3\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> There are no subarrays of size <code>k = 3</code> that contain at least <code>m = 3</code> distinct elements in the given array [1,2,1,2,1,2,1]. Therefore, no almost unique subarrays exist, and the maximum sum is 0.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>1 &lt;= m &lt;= k &lt;= nums.length</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n</ul>\n",
            "translatedTitle": "几乎唯一子数组的最大和",
            "translatedContent": "<p>给你一个整数数组&nbsp;<code>nums</code>&nbsp;和两个正整数&nbsp;<code>m</code>&nbsp;和&nbsp;<code>k</code>&nbsp;。</p>\n\n<p>请你返回 <code>nums</code>&nbsp;中长度为 <code>k</code>&nbsp;的&nbsp;<strong>几乎唯一</strong>&nbsp;子数组的 <strong>最大和</strong>&nbsp;，如果不存在几乎唯一子数组，请你返回 <code>0</code>&nbsp;。</p>\n\n<p>如果 <code>nums</code>&nbsp;的一个子数组有至少 <code>m</code>&nbsp;个互不相同的元素，我们称它是 <strong>几乎唯一</strong>&nbsp;子数组。</p>\n\n<p>子数组指的是一个数组中一段连续 <strong>非空</strong>&nbsp;的元素序列。</p>\n\n<p>&nbsp;</p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>nums = [2,6,7,3,1,7], m = 3, k = 4\n<b>输出：</b>18\n<b>解释：</b>总共有 3 个长度为 k = 4 的几乎唯一子数组。分别为 [2, 6, 7, 3] ，[6, 7, 3, 1] 和 [7, 3, 1, 7] 。这些子数组中，和最大的是 [2, 6, 7, 3] ，和为 18 。\n</pre>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<pre>\n<b>输入：</b>nums = [5,9,9,2,4,5,4], m = 1, k = 3\n<b>输出：</b>23\n<b>解释：</b>总共有 5 个长度为 k = 3 的几乎唯一子数组。分别为 [5, 9, 9] ，[9, 9, 2] ，[9, 2, 4] ，[2, 4, 5] 和 [4, 5, 4] 。这些子数组中，和最大的是 [5, 9, 9] ，和为 23 。\n</pre>\n\n<p><strong class=\"example\">示例 3：</strong></p>\n\n<pre>\n<b>输入：</b>nums = [1,2,1,2,1,2,1], m = 3, k = 3\n<b>输出：</b>0\n<b>解释：</b>输入数组中不存在长度为 <code>k = 3</code> 的子数组含有至少  <code>m = 3</code> 个互不相同元素的子数组。所以不存在几乎唯一子数组，最大和为 0 。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>1 &lt;= m &lt;= k &lt;= nums.length</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n</ul>\n",
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