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Quick Summary
Determine the minimum number of coins required to reach a target amount from given denominations.
Return the exact quantity of each coin type used in that optimal combination.
Return an empty array if the target amount cannot be formed.
What This Tests
Dynamic programming state definition and recurrence relations
Reconstructing solutions from computed DP states
Handling boundary conditions like zero targets and unreachable sums
Managing unbounded resource allocation efficiently
Common Patterns
Dynamic Programming
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