
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
Tomáš received nine cards with the following numbers and mathematical symbols:

$$
18, 19, 20, 20, +, -, \times, (, )
$$

He arranged the cards such that no two cards with numbers were placed next to each other, meaning number cards alternated with symbol cards. He then calculated the result of the expressions formed and recorded the result.

Determine the maximum result Tomáš could achieve.

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