
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
Define a function \( f \) on the set of positive integers \( N \) as follows:
(i) \( f(1) = 1 \), \( f(3) = 3 \);
(ii) For \( n \in N \), the function satisfies
\[ 
\begin{aligned}
&f(2n) = f(n), \\
&f(4n+1) = 2f(2n+1) - f(n), \\
&f(4n+3) = 3f(2n+1) - 2f(n).
\end{aligned}
\]

Find all \( n \) such that \( n \leqslant 1988 \) and \( f(n) = n \).

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