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+<h2><a href="https://leetcode.com/problems/minimize-product-sum-of-two-arrays">2029. Minimize Product Sum of Two Arrays</a></h2><h3>Medium</h3><hr><p>The <b>product sum </b>of two equal-length arrays <code>a</code> and <code>b</code> is equal to the sum of <code>a[i] * b[i]</code> for all <code>0 &lt;= i &lt; a.length</code> (<strong>0-indexed</strong>).</p>
+
+<ul>
+	<li>For example, if <code>a = [1,2,3,4]</code> and <code>b = [5,2,3,1]</code>, the <strong>product sum</strong> would be <code>1*5 + 2*2 + 3*3 + 4*1 = 22</code>.</li>
+</ul>
+
+<p>Given two arrays <code>nums1</code> and <code>nums2</code> of length <code>n</code>, return <em>the <strong>minimum product sum</strong> if you are allowed to <strong>rearrange</strong> the <strong>order</strong> of the elements in </em><code>nums1</code>.&nbsp;</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums1 = [5,3,4,2], nums2 = [4,2,2,5]
+<strong>Output:</strong> 40
+<strong>Explanation:</strong>&nbsp;We can rearrange nums1 to become [3,5,4,2]. The product sum of [3,5,4,2] and [4,2,2,5] is 3*4 + 5*2 + 4*2 + 2*5 = 40.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums1 = [2,1,4,5,7], nums2 = [3,2,4,8,6]
+<strong>Output:</strong> 65
+<strong>Explanation: </strong>We can rearrange nums1 to become [5,7,4,1,2]. The product sum of [5,7,4,1,2] and [3,2,4,8,6] is 5*3 + 7*2 + 4*4 + 1*8 + 2*6 = 65.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>n == nums1.length == nums2.length</code></li>
+	<li><code>1 &lt;= n &lt;= 10<sup>5</sup></code></li>
+	<li><code>1 &lt;= nums1[i], nums2[i] &lt;= 100</code></li>
+</ul>