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Cowreography

USACO · 2024 · US Open · gold-1

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greedy · sorting · strings · combinatorics

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

sample trace

Cowreography: greedy walkthrough

Cowreography: use the linked editorial?s greedy, sorting idea on the published sample, then verify the displayed output.

Published input4 1 0111 1110 5 2 11000 00011 5 4 11000 00011modelAlgorithm ideaProcess choices in the order justified by the editorial and maintain the invariant that each accepted choice remains safe.task resultExpected output3 3 2
  1. 1

    Order

    Arrange candidates by the criterion used by the task?s greedy strategy.
  2. 2

    Choose

    Accept the next locally safe option while preserving the feasibility invariant.
  3. 3

    Finish

    Read the accumulated result and check it against the sample output.
  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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