
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
Petya runs down from the fourth floor to the first 2 seconds faster than his mom rides the elevator. His mom rides the elevator from the fourth floor to the first 2 seconds faster than Petya runs down from the fifth floor to the first. How many seconds does it take for Petya to run down from the fourth floor to the first? (The lengths of the stair flights between all floors are identical).

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