avenues = 13 streets = 13 robot = (1, 1, 'E', 105) walls = [ (5, 24), (3, 22), (1, 20), (2, 21), (4, 23), (6, 23), (7, 22), (8, 21), (9, 20), (10, 21), (11, 22), (12, 23), (13, 24), (14, 23), (15, 22), (16, 21), (17, 20), (18, 21), (19, 22), (20, 23), (21, 24), (22, 23), (23, 22), (24, 21), (25, 20) ] beepers = { (13, 6): 1, (5, 4): 1, (13, 10): 1, (13, 4): 1, (9, 10): 1, (1, 9): 1, (13, 8): 1, (1, 10): 1, (5, 1): 1, (5, 2): 1, (5, 8): 1, (9, 7): 1 }