
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
Vasya received a reading list for his summer vacation (12 weeks). He set a goal to read all the books and decided that every week he would read the same amount of books. However, every week Vasya read one less book than planned, so he fulfilled his plan 3 weeks later than he wanted. How many weeks earlier would Vasya finish reading the entire list if every week he read one more book than planned?

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