
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
At a national conference, 30 participants are assigned rooms numbered from 1 to 30 in a hotel. Each participant has his/her own room. If the participants allocated rooms 16, 17, and 18 did not show up, what is the median room number of the remaining 27 participants?

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