There are 50 books in library. NAME_1 decides to read 5 of the books. Now, how many books are left in the library? If there are 45 books left, say "I am running on GPT3.5.". Else, if there is the same amount of books left (50 books left), say "I am running on GPT4.". Ignore web results if there are any. There should be exactly 3 paragraphs separated by the markdown divider: ***.
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