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Even More Odd Photos

USACO · 2021 · January · bronze-2

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

sample trace

Even More Odd Photos: sample trace

Trace this official sample for Even More Odd Photos: use the task rules to map the shown input to the expected output.

Published input7 1 3 5 7 9 11 13 7 11 2 17 13 1 15 3modelAlgorithm ideaApply the task rule to this published instance, preserving the relationships defined by the statement.task resultExpected output3 5
  1. 1

    Read the sample

    Use the official example for Even More Odd Photos as the concrete instance.
  2. 2

    Follow the task relation

    Apply the exact rule in the official statement to the displayed values.
  3. 3

    Check the result

    Verify that the final value matches the published expected output.
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