
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
Sofia entered the elevator, and after it went up seven floors, then down six floors, and finally up five floors, she got out on the twentieth floor. Determine the floor number on which she initially entered the elevator.

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