
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
An artist has 18 cubes, each with an edge of 1 meter. The cubes are arranged in a stair-like structure with four levels decreasing in the number of cubes from bottom to top (7, 5, 4, 2). Calculate the total surface area she paints.

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