<|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
 Dave, Amy, and their friend, Ben, were picking up sticks from the yard. Dave picked up fourteen sticks, Amy picked up nine, and Ben picked up twelve. The total number of sticks initially in the yard was sixty-five sticks. What's the difference between the number of sticks they all picked up and the number of sticks still left in the yard? 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
30
Dave, Amy, and their friend, Ben, were picking up sticks from the yard. Dave picked up fourteen sticks, Amy picked up nine, and Ben picked up twelve. The total number of sticks initially in the yard was sixty-five sticks. What's the difference between the number of sticks they all picked up and the number of sticks still left in the yard?
test