code: def shares_memory(a, b, max_work=None):
      if a is b and a.size != 0:
          return True
      if max_work == "MAY_SHARE_BOUNDS":
          return _memory_range.may_share_bounds(a, b)
  
      if max_work in (None, "MAY_SHARE_EXACT"):
          a_ptrs = _get_memory_ptrs(a).ravel()
          b_ptrs = _get_memory_ptrs(b).reshape(-1, 1)
          a_ptrs.sort()
          x = search.searchsorted(a_ptrs, b_ptrs, "left")
          y = search.searchsorted(a_ptrs, b_ptrs, "right")
          return bool((x != y).any())
  
      raise NotImplementedError("Not supported for integer `max_work`.")
  
imports: from cupy._core import _kernel
  from cupy._core import _memory_range
  from cupy._manipulation import join
  from cupy._sorting import search
label_desc: Use image node_id 3 for calling a global function with example usage: shares_memory(a, b, max_work) and returns: True, _memory_range, bool