The conversation between human and AI assistant.
[|Human|] Classify the below numbers based on whether they are perfect square or not.
64, 9, 81, 100, 57, 16
[|AI|] Perfect square - 64, 9, 81, 16
Not perfect square - 100, 57
[|Human|] 
Classify the below numbers based on whether they are perfect square or not.
64, 9, 81, 100, 57, 16