
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 the Westeros Empire, there were 1000 cities and 2017 roads (each road connects some two cities). From each city, it was possible to travel to any other city. One day, an evil wizard cursed $N$ roads, making them impassable. As a result, 7 kingdoms formed, such that within each kingdom, it is possible to travel from any city to any other city using the roads, but it is not possible to travel from one kingdom to another using roads. What is the maximum possible value of $N$ for this to be possible?

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