input: Write a function to filter a list of integers and return a new list containing only the integers that are greater than 50. Use a lambda expression to achieve this.
  
  assert filtered_list([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filtered_list([1, 2, 3, 4, 50])==[]
  assert filtered_list([100, 60, 20, 80, 51])==[100, 60, 80, 51]
  assert filtered_list([])==[]
  assert filtered_list([50, 51, 49, 52])==[51, 52]
output: def filtered_list(lst):
      return list(filter(lambda x: x > 50, lst))