# Maximal Square

## Question

### Problem Statement

Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area.

#### Example

For example, given the following matrix:

1 0 1 0 0
1 0 1 1 1
1 1 1 1 1
1 0 0 1 0

Return 4.