ill the grid with the digits 0-3 so that each digit appears TWICE in every row, column, and marked 4x2 box. Reconstruct the maze by drawing thick walls along certain cell edges. The wall around the maze perimeter has been drawn already. The digit in a circle indicates how many of that cell's 4 edges contain a wall. The finished maze must have a valid route from the red R (rat) to the blue C (cupcake), without passing through any walls or visiting any cell more than once. No diagonal moves are possible in this maze, due to the brown wall spots on the corners of cells. An edge containing a purple arrow does not contain a wall, and sits between two different digits, with the arrow pointing towards the smaller digit. An arrow can only be passed through in the direction it's pointing. Adjacent digits along the path must sum to at least 3.