<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 How many colored lights are needed at minimum if each side of a square ceiling is to be fitted with 20 colored lights? Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
76
How many colored lights are needed at minimum if each side of a square ceiling is to be fitted with 20 colored lights?
test