
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
Given three points P<sub>1</sub> (1, 1, 0), P<sub>2</sub> (0, 1, 1) and P<sub>3</sub> (1, 0, 1), with O as the origin, find the magnitude of the vector $ \overrightarrow{OP_1} + \overrightarrow{OP_2} + \overrightarrow{OP_3} $.

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