
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
Xiao Zhang and Xiao Li set off from locations A and B simultaneously, heading towards each other. They first meet 5 kilometers away from location A. They continue to walk to their respective destinations (B and A) and then immediately turn back. They meet for the second time 4 kilometers away from location B. The distance between locations A and B is     kilometers.

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