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Quantum Moochanics

USACO · 2024 · February · gold-3

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sorting · data-structures · simulation

The organizer’s problem statement is available at the official source link.

sample trace

Quantum Moochanics: sorting walkthrough

Quantum Moochanics: use the linked editorial?s sorting, data structures idea on the published sample, then verify the displayed output.

Published input4 2 1 11 1 1 2 1 12 1 1 2 1 11 4 6 2 1 11 4 5 2 4 1 3 5 8 1 1 1 1 4 1 4 5 8 1 1 1 1modelAlgorithm ideaSort by the task-relevant key so the ordering exposes candidates that can be checked locally.task resultExpected output9 9 11 11 1 1 3 3 1 1 3 3 7 2 2 7
  1. 1

    Order

    Sort items by the comparison key used by the task.
  2. 2

    Scan

    Inspect the ordered neighbors or groups and update the candidate result.
  3. 3

    Finish

    Use the final aggregate or selected item as the answer.
  4. 4

    Verify the sample

    Use the published sample output to check the result of this idea on the displayed input.
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