
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 conference of $40$ people, there are $25$ people who each know each other, and among them, $5$ people do not know $3$ other specific individuals in their group. The remaining $15$ people do not know anyone at the conference. People who know each other hug, and people who do not know each other shake hands. Determine the total number of handshakes that occur within this group.

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