
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
The expression \(2-0-1-9\) contains four digits and three minus signs. What is the largest value that can be obtained by inserting exactly one pair of brackets into the expression?

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