
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
One fourth of the people in a room left, and then half of the remaining started to dance. At the same time, 4 people decided to attend an event inside the same room. There were then $18$ people who were not dancing or attending the event. Determine the original number of people in the room.

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