← CSES Better

Photo Op

USACO · 2025 · January · gold-3

Open official problem ↗
Ask AI

Open a hint-first prompt in a new AI chat. Grok may ask you to confirm before sending.

Open Claude Desktop

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

sample trace

Photo Op: sample trace

Trace this official sample for Photo Op: use the task rules to map the shown input to the expected output.

Published input4 5 6 7 1 7 5 2 4 4 3 1 6 4 2 9 2 3 10 7 1 2 10 1 9 1 5 6 8 9 1 3 5 1 4 1 3 10 7 4 9 2 5 6 6modelAlgorithm ideaApply the task rule to this published instance, preserving the relationships defined by the statement.task resultExpected output9 9 9 10 12 12 16 16 12 12 12 12 14 14
  1. 1

    Read the sample

    Use the official example for Photo Op 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.
Tools
1
2
3
4
5
6
7
8
9
10
11
12
Draft saved locally
|12 lines, 156 chars

Run output

Run your code to see output.