Practice Pinterest Coding Question | Real Coding Interviews

Quick Summary

Manage hierarchical permissions where granting or revoking affects a region and all its descendants.
Track chronological operations per advertiser to resolve overlapping grants and revokes.
Query access status by traversing from a target region up to the hierarchy root.

What This Tests

Common Patterns

Graph TraversalHashingDFS/BFS

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Hint 3

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Test Cases

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