
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

On the picture, there are stones you can use to cross a stream. The puzzle is to start from the lower bank, step twice on the upper bank, and then return once to the lower bank. However, you must be careful to step on each stone the same number of times. What is the minimum number of steps you can take to achieve this?

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