
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
Find ( [1 1/2 ] - [1 1/3 ] ) + ( [2 1/2 ] - [2 1/3 ] ) + ... + ( [2003 1/2 ] - [2003 1/3 ] ).

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