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GPU Credits Manager
Build a GPU credit ledger where events arrive out-of-order. Grants expire, subtracts allocate FEFO (soonest-expiring-first), and queries ask for balance at any timestamp. Part 2 adds retroactive cancellations, forcing full replay correctness.
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Talk through the problem while you code. Guest text is free. Hosted voice is the Own Words Pack.
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Code + tests need a desktop
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