
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 teaching building has a total of 4 floors, and each floor has two staircases, one to the east and one to the west. How many different ways are there to walk from the first floor to the fourth floor?

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