
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
In a bag, there are balls of two different colors: black and white. What is the minimum number of balls that must be taken out of the bag blindly to ensure that among them there are at least two balls of the same color?

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