
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 50 students in a science class. 25 of them have cool dads, 30 of them have cool moms, and 15 of them have both cool dads and cool moms. Additionally, 10 students have cool siblings. How many students have parents and siblings who are all uncool?

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