def max_difference(test_list):
  
  temp = [abs(b - a) for a, b in test_list]
  res = max(temp)
  return (res) 
def max_difference(b4Ixw475g):
    temp = [abs(b - a) for a, b in b4Ixw475g]
   
    res = max(temp)
    return res