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Quick Summary
Identify the maximum area of an axis-aligned rectangle formed by exactly four distinct lattice points.
Rectangle sides must remain parallel to the x and y axes.
Return 0 if no valid combination of four points forms such a rectangle.
What This Tests
Hash set operations for constant-time existence checks
Geometric properties of axis-aligned shapes
Optimizing combinatorial search spaces
Coordinate arithmetic and absolute difference calculations
Common Patterns
Hashing
Sorting
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Python3
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Input
points =
Output
Expected
