input: Write a function to filter a list of integers and return only those values that are greater than 50. Use a lambda expression to perform the filtering operation. If the list is empty, return an empty list.
  assert filter_greater_than_50([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filter_greater_than_50([10, 20, 30, 40])==[]
  assert filter_greater_than_50([51, 52, 53, 54])==[51, 52, 53, 54]
  assert filter_greater_than_50([])==[]
output: return list(filter(lambda x: x > 50, lst)) if lst else []