
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
A function \( f(n) \) defined for positive integers satisfies:
\[ f(n) = \begin{cases} 
n - 3 & \text{if } n \geq 1000 \\ 
f[f(n + 7)] & \text{if } n < 1000 
\end{cases} \]
Determine \( f(90) \).

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