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546. Remove Boxes

Hard50.0% acceptance12 companies

You are given several boxes with different colors represented by different positive numbers.

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 k boxes, k >= 1), remove them and get k * k points.

Return the maximum points you can get.

Example 1:

Input: boxes = [1,3,2,2,2,3,4,3,1]
Output: 23
Explanation:
[1, 3, 2, 2, 2, 3, 4, 3, 1] 
----> [1, 3, 3, 4, 3, 1] (3*3=9 points) 
----> [1, 3, 3, 3, 1] (1*1=1 points) 
----> [1, 1] (3*3=9 points) 
----> [] (2*2=4 points)

Example 2:

Input: boxes = [1,1,1]
Output: 9

Example 3:

Input: boxes = [1]
Output: 1

Constraints:

  • 1 <= boxes.length <= 100
  • 1 <= boxes[i] <= 100
17:59
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1class Solution:
2 def removeBoxes(self, boxes: List[int]) -> int:
3
Starter codePython 3Spaces: 4
Examples
Input
[1,3,2,2,2,3,4,3,1]
Input
[1,1,1]
Input
[1]
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