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Design a voting system that tracks article scores, user votes, and recent vote flips.
Maintain a dynamic leaderboard of articles ranked by score with explicit tie-breaking rules.
Handle state updates efficiently while supporting range queries for top-k rankings.
What This Tests
Hash map design and distributed state management
Custom sorting and tie-breaking logic
Deque usage for bounded history tracking
Balancing lookup speed with ordered retrieval
Common Patterns
Hashing
Sorting
Heap / Priority Queue
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