
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
Given a $5\times 5$ block of calendar dates from 1 to 25 arranged consecutively, reverse the order of the numbers in the second, third, and fifth rows, and then calculate the positive difference between the sums of the numbers on the two diagonals.

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