Given a mxn matrix, count the number of squares in the matrix. Total 20 Squares in Matrix of size 4 x 3 12 Squares of Size1x1 6 Squares of size 2 x 2 2 Squares of size 3 x 3 Example 1: Input: m = 2, n...

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Extracted text: Given a mxn matrix, count the number of squares in the matrix. Total 20 Squares in Matrix of size 4 x 3 12 Squares of Size1x1 6 Squares of size 2 x 2 2 Squares of size 3 x 3 Example 1: Input: m = 2, n = 2 Output: 5 Explanation: There are a total of 5 squares in a 2*2 matrix. Four 1*1 squares and one 2*2 square.