
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
In a certain country, the airline network is such that any city is connected by flight routes with no more than three other cities, and from any city to any other city, you can travel with no more than one transfer.

What is the maximum number of cities that can be in this country?

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