
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
Four roads branch off a highway to four villages A, B, C, and D sequentially. It is known that the distance along the road/highway/road from A to B is 9 km, from A to C is 13 km, from B to C is 8 km, and from B to D is 14 km. Find the length of the path along the road/highway/road from A to D. Explain your answer.

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