Maximal Rectangle

Given a binary matrix filled with '0's and '1's, find the largest rectangle containing only '1's and return its area.

Constraints

  • rows == matrix.length
  • cols == matrix[i].length
  • 1 <= row, cols <= 200
  • matrix[i][j] is '0' or '1'.
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class Solution:
def maximalRectangle(self, matrix: List[List[str]]) -> int:
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