text: from hashlib import sha256
  
  
  if __name__ == '__main__':
      x = 5
      y = 0  # y未知
      while sha256(f'{x*y}'.encode()).hexdigest()[-1] != "0":
          y += 1
      print(f'{x*y}')
      print(sha256(f'{x*y}'.encode()).hexdigest())
      print(f'The solution is y = {y}')
  
  