
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
Two neighbors agree that cows are worth $\$400$ and that sheep are worth $\$250$. They resolve debts by paying in cows or sheep, with any necessary "change" received in the form of the other animal. What is the smallest positive debt that can be settled in this manner?

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