There are 10 distinct floor tiles arranged in a 2×5 layout (we have rows 0 and 1, and columns 1, 2, 3, 4, 5), labeled tile_0-1 (located in the top left corner of the grid) through tile_1-5 (located in the bottom right corner of the grid). There is one robot, robot1, which can hold exactly one color of paint at a time. The two paint colors available are white and black.

Robot1 begins on the tile labeled tile_0-3 and is currently holding the color white. Both white and black are available to be switched to if needed.

Every tile in the grid is clear except for tile_0-3, which is occupied by robot1. Thus, tile_0-1, tile_0-2, tile_0-4, tile_0-5 in row 0, and tile_1-1, tile_1-2, tile_1-4, tile_1-5 in row 1 are all not painted and not occupied.

Vertical adjacency is defined such that tile_1-n is immediately below tile_0-n for each column n (1 through 5). Horizontal adjacency is defined within each row, where each tile has left and right neighbors within the same row, provided they exist in the grid. For example, tile_0-2 is to the right of tile_0-1, tile_0-3 is to the right of tile_0-2, and so forth. Similarly, tile_1-2 is to the right of tile_1-1, and so on.