
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
On a strip of size \(1 \times N\), 25 checkers are placed on the first 25 squares on the left. A checker can move to the adjacent right empty square or jump over the adjacent right checker to the next square (if that square is empty). Movement to the left is not allowed. What is the smallest \(N\) such that all checkers can be placed in reverse order without gaps?

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