ARC

Appearance

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8be77c9e ​

composer
input = [[#1, #1, black], [#0, #1, blue], [#2, #3, #4]]
output = #5
(Color, Color, Color, Color, Color, OList OList Color)
(blue, blue, black, black, black, [[blue, blue, black], [blue, blue, blue], [black, black, black], [black, black, black], [blue, blue, blue], [blue, blue, black]])
(blue, black, blue, blue, black, [[black, black, black], [blue, black, blue], [blue, blue, black], [blue, blue, black], [blue, black, blue], [black, black, black]])
(black, black, black, black, blue, [[black, black, black], [black, black, blue], [black, black, blue], [black, black, blue], [black, black, blue], [black, black, black]])
(black, black, blue, black, black, ?)
arc
let g: OList OList Color

let input = g

let output = flat [g, rev g]