
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
There is a parking lot with 50 parking spaces, numbered from 1 to 50. Currently, all parking spaces are empty. Two cars arrive at the parking lot: one black and one pink. How many ways are there to arrange these cars in such a way that there is at least one empty parking space between them?

If the black and pink cars swap places, it is considered a new arrangement.

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