
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 vectors $a=(2, -1)$, $b=(-1, m)$, and $c=(-1, 2)$. If $(a+b) \parallel c$, then $m=\boxed{-1}$.

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