Answer to Question #37630 in Python for argoo

Question

given an n*n binary matrix(only 1 and 0),how can we go about counting number of 2*2 squares(squares are made by 1)

for example A=[[1,1],[1,1]] is considered to make one 2*2 square . or

A = [[1, 1, 0, 1],
[1, 1, 1, 1],
[1, 1, 1, 0],
[0, 1, 1, 1]]
is considered to make four 2*2 squares.