
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
Xiao Yang bought a pieces of type A goods and b pieces of type B goods, spending a total of 213 yuan, where each piece of type A goods costs 5 yuan and each piece of type B goods costs 19 yuan. What is the maximum value of a + b?

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