system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Classify the below numbers based on whether they are perfect square or not.
64, 9, 81, 100, 57, 16


assistant
Perfect square - 64, 9, 81, 16
Not perfect square - 100, 57