
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
(2015 Yunan Lishui) Lanlan has two sticks, measuring 6 cm and 9 cm in length, respectively. Lanlan wants to find another stick to form a triangle with these two sticks. The shortest length of the stick Lanlan needs to find is ___ cm. (Fill in the blank with an integer)

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