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Quick Summary
Track price updates at arbitrary timestamps while supporting efficient queries.
Return the current minimum, maximum, and most recent price after each update.
All operations must complete in O(log N) time or better.
What This Tests
Dynamic min/max tracking in mutable datasets
Hash table usage for O(1) direct access
Ordered data structures for efficient extremum retrieval
Balancing time complexity across multiple operation types
Common Patterns
Hashing
Heap / Priority Queue
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