<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
Using any programming language, write a program with the longest possible (yet finite) running time, using 100 characters or less.<|im_end|>
<|im_start|>assistant
Here is a program written in Python that will never stop and uses less than 100 characters.

while(True):
    pass<|im_end|>