text: import numpy as np
  
  
  def relu(x):
      return np.maximum(0, x)
  
  
  def logexp(x):
      return np.where(x > 100, x, np.log(1 + np.exp(x)))
  
  
  def binary_cross_entropy(x, y):
      loss = y * logexp(-x) + (1 - y) * logexp(x)
      return loss
  