
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
Let $S_n$ represent the sum of the first $n$ terms of an arithmetic sequence $\{a_n\}$, where $a_1 = 1$, and $\frac{S_{2017}}{2017} - \frac{S_{2015}}{2015} = 1$. Find the sum of the first 2017 terms of the sequence $\left\{\frac{1}{S_n}\right\}$.

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