
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
For any real number $x$, $[x]$ denotes the greatest integer less than or equal to $x$, such as $[-0.2]=-1$, $[1.72]=1$. Given $a_{n}=[ \frac {n}{3}]$ ($n\in N^{*}$), and $S_{n}$ is the sum of the first $n$ terms of the sequence $\{a_{n}\}$, then $S_{2017}=$_______.

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