code: def __setitem__(self, elem, value):
      i, j = elem
  
      start = self.column_ranges[i * 2 + 0]
  
      self.dense[self.offsets[i] + j - start] = value
  
imports: import array
  from abc import ABC, abstractmethod
  from itertools import repeat
  from typing import Tuple
  import numpy
  from .window import CRWindow, Window
label_desc: Use image node_id 5 for calling the SparseCostMatrix obj's underlying member method code with example usage: obj.__setitem__(elem, value) without return types