LCP 03. 机器人大冒险-力扣双百代码
解释：U(0, 1) -> R(1, 1) -> R(2, 1) -> U(2, 2) -> R(3, 2)。输入：command = “URR”, obstacles = [[2, 2]], x = 3, y = 2。输入：command = “URR”, obstacles = [[4, 2]], x = 3, y = 2。如果能，返回true；输入：command = “URR”, obstacles = [], x = 3, y = 2。解释：机器人在到达终点前会
