code: def __test():
      rset = RandomizedSet()
      ground_truth = set()
      n = 64
  
      for i in range(n):
          rset.insert(i)
          ground_truth.add(i)
  
      # Remove a half
      for i in random.sample(range(n), n // 2):
          rset.remove(i)
          ground_truth.remove(i)
  
      print(len(ground_truth), len(rset.elements), len(rset.index_map))
      for i in ground_truth:
          assert i == rset.elements[rset.index_map[i]]
  
      for i in range(n):
          print(rset.random_element(), end=" ")
      print()
  
imports: import random
label_desc: Use image node_id 1 for calling a global function with example usage: __test() without return types