
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
The city \$N is a \(9 \times 9\) grid. Vanya can open a metro station in any two cells - from then on, it will take 10 minutes to travel from one such cell to the other. Identify the two cells where Vanya needs to open metro stations so that Tanya can travel from any cell in the city to any other cell within 2 hours.

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