Hi!
There's a problem I'd appreciate some help with (maybe hints or a sketch of solution...)
You have an n \times n
grid, with n \le 450
. Every element of the grid is either '.' or '#'.
A rectangle is a rectangle
Counting rectangles in a grid
Hi!
There's a problem I'd appreciate some help with (maybe hints or a sketch of solution...)
You have an n \times n
grid, with n \le 450
. Every element of the grid is either '.' or '#'.
A rectangle is a rectangle