
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 100 students in the fourth-grade classes of school No. 15. Of these, 37 have enrolled in the football section, and 40 in the swimming section. 15 students enrolled in both sections. How many students did not enroll in any section?

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