
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
Try to divide the set $\{1,2,\cdots, 1989\}$ into 117 mutually disjoint subsets $A_{i}, i = 1,2,\cdots, 117$, such that
(1) Each $A_{i}$ contains 17 elements;
(2) The sum of the elements in each $A_{i}$ is the same.


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