<|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
 A triangle has sides of lengths 20 and 19. If the triangle is not acute, how many possible integer lengths can the third side have? 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
16
A triangle has sides of lengths 20 and 19. If the triangle is not acute, how many possible integer lengths can the third side have?
test