Divide the grid along the grid lines into regions called polyominoes. Place a number inside each cell equal to the total area (in number of cells) of the polyomino it belongs to. No two polyominoes with the same area, or with areas that differ by one, can share an edge. The number at the top left of each cage gives the sum of all numbers that appear inside of it. Numbers may be repeated in cages. [Answer check will work if cells are filled with just the units digit of their numbers.]