
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
Given five balls numbered 1, 2, 3, 4, 5, and five boxes also numbered 1, 2, 3, 4, 5, place these five balls into the boxes so that each box contains one ball, and exactly one ball’s number matches the number of its box. The total number of such placements is \_\_\_\_\_\_.

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