The ICFP2023 Challenge is Jul 7-10, registraion opens late June. Updates at TwitICFP2023. These contests are insanely complicated and competitive. The challenge evolves every 12 hours with new files and rule updates.
The ICFP2022 HomePage has details of the RoboPaint contest. Twit2022, WriteUps, PriorEvents, Spec, ImageSubmissions, Puzzles, SawickiSolutions are useful links. Posted 6/19/23.
This challenge of Optimal RGB is addressed in detail by RGB Team or wiki Weiszfeld's Algotithm
This challenge is to return a good [r g b] set for a given image region input [M N 3].Four regions of 21.png will be provided and the total score will be evaluated. The score must be less than 105500 to Pass. A scoring function is provided in the template. Score is Alpha*sum(pixel_color_dist)
The output is a [r g b] vector.
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Last Solution submitted on Jun 04, 2026

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Richard Zapor William Chris Cleveland Christian Schröder

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