
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 distance between two cities in kilometers is represented by a two-digit number in such a way that the left digit of this number is equal to the difference between this number and the number formed by reversing its digits. What is this distance?

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