
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 240 residents in the village of Sosnovka. Some people are acquainted with each other, and some are not. It is known that any five residents can be seated at a round table so that each of them is acquainted with both of their neighbors. What is the smallest number of pairs of acquainted residents in Sosnovka?

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