code: def mem_estimate(self):
      return sum(self.mem.values())
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Union, Type, Tuple, Any, List, Dict, Callable, ClassVar
  import functools
  from enum import Enum, auto
  from tinygrad.helpers import prod, dedup
  from tinygrad.dtype import dtypes, DType
  from tinygrad.shape.symbolic import Variable
  from dataclasses import dataclass
label_desc: Use image node_id 1 for calling the FlopCounter obj's underlying member method code with example usage: obj.mem_estimate() and returns: sum