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leetcode/problem/remove-boxes.html

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+<p>You are given several <code>boxes</code> with different colors represented by different positive numbers.</p>
+
+<p>You may experience several rounds to remove boxes until there is no box left. Each time you can choose some continuous boxes with the same color (i.e., composed of <code>k</code> boxes, <code>k &gt;= 1</code>), remove them and get <code>k * k</code> points.</p>
+
+<p>Return <em>the maximum points you can get</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong>Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> boxes = [1,3,2,2,2,3,4,3,1]
+<strong>Output:</strong> 23
+<strong>Explanation:</strong>
+[1, 3, 2, 2, 2, 3, 4, 3, 1] 
+----&gt; [1, 3, 3, 4, 3, 1] (3*3=9 points) 
+----&gt; [1, 3, 3, 3, 1] (1*1=1 points) 
+----&gt; [1, 1] (3*3=9 points) 
+----&gt; [] (2*2=4 points)
+</pre>
+
+<p><strong>Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> boxes = [1,1,1]
+<strong>Output:</strong> 9
+</pre>
+
+<p><strong>Example 3:</strong></p>
+
+<pre>
+<strong>Input:</strong> boxes = [1]
+<strong>Output:</strong> 1
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= boxes.length &lt;= 100</code></li>
+	<li><code>1 &lt;= boxes[i]&nbsp;&lt;= 100</code></li>
+</ul>