
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
In a 4 by 4 grid, each of the 16 small squares measures 2 cm by 2 cm and is shaded. Four unshaded shapes, one ellipse, and three circles, are placed on top of the grid. The ellipse has a major axis equal to 4 cm and a minor axis equal to 2 cm, positioned horizontally. The three circles each have radii of 1 cm and are distributed within the grid. The area of the visible shaded region can be written in the form $A-B\pi$ square cm. What is the value of $A+B$?

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