
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
We want to determine the length of a ship moving parallel to the shore from the shore. If we walk in the same direction as the ship, its length appears to be 200 steps. However, if we walk in the opposite direction, the ship passes by us completely in just 40 steps. How many steps long is the ship?

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