
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
If \( S_{n} = 1 - 2 + 3 - 4 + 5 - 6 + \cdots + (-1)^{n+1} n \) for each positive integer \( n \), then \( S_{1992} + S_{1993} \) is equal to:
(a) -2 ;
(b) -1 ;
(c) 0 ;
(d) 1 ;
(e) 2 .

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