
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 the complex plane, the vertices of the right-angled triangle $\triangle ABC$ correspond to the complex numbers $z+1$, $2z+1$, and $(z+1)^2$, with $A$ being the right-angled vertex, and $|z|=2$. Define the set $M=\left\{m \mid z^{m} \in \mathbf{R}, m \in \mathbf{N}_{+}\right\}$ and set $P=\left\{x \mid x=\frac{1}{2^{m}}, m \in M\right\}$. Find the sum of all elements in set $P$.

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