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Quick Summary
Implement a trading system that matches buy orders to the cheapest available inventory item per product name.
Maintain persistent state across batch calls where matched items become permanently unavailable.
Enable fast minimum-price retrieval and efficient status updates without rescanning the full inventory.
What This Tests
Priority Queue management for efficient minimum retrieval
State persistence and synchronization across sequential method calls
Lazy deletion strategies for handling outdated data structure entries
Object reference handling versus value copying during updates
Common Patterns
Heap / Priority Queue
Hashing
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Acceptance Rate
10.8%
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Python3
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