
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
A swimming pool is filled with water from 4 pipes. The first pipe fills it in one day, the second in two days, the third in three days, and the fourth in four days. Determine how long it will take to fill the pool if all four pipes are opened simultaneously.

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