OpenAIVerified interview challenge
GPU Credit 2
Keep a GPU credit ledger accurate as grants expire and spending reduces the balance.
Unlock with Full AccessThe challenge
Build a ledger that tracks credit grants, deductions and the remaining balance. In this variant, spending permanently consumes credit, so later queries must reflect what has already been used. The complete problem specifies how deductions and expiration interact.
What you'll practise
Persistent deductions
Keep balances consistent across a sequence of spending operations.
Expiring grants
Account for credits that become unavailable as time advances.
Efficient queries
Choose data structures that handle a large number of ledger operations.
solution.pyPython 3.13
class GPUCredit:
def __init__(self) -> None:
pass
# Your implementation goes hereTest cases
Run your code to see results.
Full instructions, starter code and test cases included with Full Access.