<|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
 Four books, "Zhoubi Suanjing", "Jiuzhang Suanshu", "Haidao Suanjing", and "Sunzi Suanjing", are to be distributed among three students, A, B, and C, with each student receiving at least one book. Calculate the number of distribution methods in which A does not receive "Zhoubi Suanjing". 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
24
Four books, "Zhoubi Suanjing", "Jiuzhang Suanshu", "Haidao Suanjing", and "Sunzi Suanjing", are to be distributed among three students, A, B, and C, with each student receiving at least one book. Calculate the number of distribution methods in which A does not receive "Zhoubi Suanjing".
test