input: Write a python function to generate a list of 50 unique random numbers between 10 and 20 using random.sample.
  assert len(generate_random_numbers()) == 50
  assert all(10 <= num < 20 for num in generate_random_numbers())
  assert len(set(generate_random_numbers())) == 50
output: import random
  
  def generate_random_numbers():
      return random.sample(range(10, 20), 10) * 5