
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
Roslyn has twelve boxes. Eight of the boxes contain pencils, five of the boxes contain pens, and three of the boxes contain both pens and pencils. How many boxes contain neither pens nor pencils?

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