
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
There are 5 students participating in a knowledge contest. After the written test, two contestants, A and B, went to inquire about their scores. The respondent told A, "All 5 of you have different scores, unfortunately, your score is not the best"; to B, he said, "You are not the last one." Determine the total number of possible rankings for these 5 people.

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