input: Write a function that takes a list of integers as input and returns a filtered list containing only the integers greater than 50. Use a lambda function to achieve this.
  assert filtered_list([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filtered_list([1, 2, 3, 4, 5])==[]
  assert filtered_list([])==[]
  assert filtered_list([50, 51, 50, 60, 50])==[51, 60]
output: def filtered_list(lst):
      return list(filter(lambda x: x > 50, lst))