
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
Originally, Sam had enough paint to decorate 40 rooms, but after a mishap, he lost four cans of paint, leaving him with enough paint for only 30 rooms. How many cans of paint did he use for the 30 rooms?

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