text: class Solution:
      def isRobotBounded(self, instructions: str) -> bool:
          cur = 0
          face = 1j
          for ch in instructions:
              if ch == 'G':
                  cur += face
              elif ch == 'L':
                  face *= 1j
              else:
                  face *= -1j
          if face == 1j and cur != 0:
              return False
          return True
  