
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
Andrew, Bob, and Chris are working together to finish a group project. If Andrew doesn't help, it would take 2 hours. If Bob doesn't help, it would take 3 hours. If Chris doesn't help, it would take 4 hours. If Dave works on the project alone, it would take him half a day. What is the least amount of time it would take for them to finish the group project?

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