
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given Orvin has enough money to buy 40 books at the regular price, and the special sale allows him to buy one book at the regular price and the next book at half off the regular price, calculate the greatest number of books Orvin can now buy.

Present the answer in LaTex format: \boxed{Your answer}
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