e8593010 ​

input = fill 10v (fill 10h grey) |> fold (fold rect) #0
output = fill 10v (fill 10h grey) |> fold rect #1
(OList UList ((VInt, HInt, VInt, HInt), Color), UList ((VInt, HInt, VInt, HInt), Color))
([{((2v, 1h, 2v, 2h), black), ((2v, 1h, 3v, 1h), black), ((3v, 8h, 4v, 8h), black), ((3v, 7h, 3v, 8h), black), ((10v, 8h, 10v, 8h), black), ((10v, 1h, 10v, 1h), black), ((9v, 10h, 10v, 10h), black), ((6v, 10h, 7v, 10h), black), ((6v, 1h, 7v, 1h), black), ((3v, 10h, 4v, 10h), black), ((1v, 9h, 1v, 9h), black), ((1v, 5h, 1v, 5h), black), ((7v, 5h, 7v, 6h), black), ((6v, 8h, 6v, 8h), black), ((6v, 3h, 6v, 3h), black), ((5v, 5h, 5v, 6h), black), ((4v, 3h, 4v, 3h), black)}], {((2v, 1h, 2v, 2h), blue), ((2v, 1h, 3v, 1h), blue), ((3v, 8h, 4v, 8h), blue), ((3v, 7h, 3v, 8h), blue), ((10v, 8h, 10v, 8h), green), ((10v, 1h, 10v, 1h), green), ((9v, 10h, 10v, 10h), red), ((6v, 10h, 7v, 10h), red), ((6v, 1h, 7v, 1h), red), ((3v, 10h, 4v, 10h), red), ((1v, 9h, 1v, 9h), green), ((1v, 5h, 1v, 5h), green), ((7v, 5h, 7v, 6h), red), ((6v, 8h, 6v, 8h), green), ((6v, 3h, 6v, 3h), green), ((5v, 5h, 5v, 6h), red), ((4v, 3h, 4v, 3h), green)})
([{((10v, 1h, 10v, 2h), black), ((9v, 1h, 10v, 1h), black), ((7v, 8h, 8v, 8h), black), ((7v, 7h, 7v, 8h), black), ((10v, 10h, 10v, 10h), grey), ((10v, 9h, 10v, 9h), black), ((9v, 10h, 9v, 10h), black), ((7v, 10h, 7v, 10h), black), ((7v, 1h, 7v, 2h), black), ((2v, 10h, 2v, 10h), black), ((2v, 1h, 2v, 2h), black), ((1v, 6h, 1v, 7h), black), ((9v, 7h, 9v, 7h), black), ((6v, 5h, 7v, 5h), black), ((5v, 9h, 5v, 9h), black), ((4v, 2h, 4v, 2h), black), ((3v, 8h, 3v, 9h), black), ((3v, 6h, 4v, 6h), black), ((2v, 4h, 2v, 4h), black)}], {((10v, 1h, 10v, 2h), blue), ((9v, 1h, 10v, 1h), blue), ((7v, 8h, 8v, 8h), blue), ((7v, 7h, 7v, 8h), blue), ((10v, 10h, 10v, 10h), grey), ((10v, 9h, 10v, 9h), green), ((9v, 10h, 9v, 10h), green), ((7v, 10h, 7v, 10h), green), ((7v, 1h, 7v, 2h), red), ((2v, 10h, 2v, 10h), green), ((2v, 1h, 2v, 2h), red), ((1v, 6h, 1v, 7h), red), ((9v, 7h, 9v, 7h), green), ((6v, 5h, 7v, 5h), red), ((5v, 9h, 5v, 9h), green), ((4v, 2h, 4v, 2h), green), ((3v, 8h, 3v, 9h), red), ((3v, 6h, 4v, 6h), red), ((2v, 4h, 2v, 4h), green)})
([{((5v, 4h, 5v, 5h), black), ((4v, 5h, 5v, 5h), black), ((2v, 4h, 3v, 4h), black), ((2v, 3h, 2v, 4h), black), ((10v, 3h, 10v, 3h), black), ((5v, 10h, 6v, 10h), black), ((1v, 9h, 3v, 9h), black), ((1v, 5h, 1v, 5h), black), ((1v, 3h, 1v, 4h), grey), ((1v, 1h, 1v, 2h), black), ((9v, 8h, 9v, 8h), black), ((9v, 6h, 9v, 6h), black), ((9v, 2h, 9v, 2h), black), ((8v, 4h, 8v, 4h), black), ((7v, 6h, 7v, 6h), black), ((6v, 3h, 7v, 3h), black), ((5v, 8h, 6v, 8h), black), ((3v, 6h, 3v, 6h), black), ((3v, 2h, 4v, 2h), black)}], {((5v, 4h, 5v, 5h), blue), ((4v, 5h, 5v, 5h), blue), ((2v, 4h, 3v, 4h), blue), ((2v, 3h, 2v, 4h), blue), ((10v, 3h, 10v, 3h), green), ((5v, 10h, 6v, 10h), red), ((1v, 9h, 3v, 9h), blue), ((1v, 5h, 1v, 5h), green), ((1v, 3h, 1v, 4h), grey), ((1v, 1h, 1v, 2h), red), ((9v, 8h, 9v, 8h), green), ((9v, 6h, 9v, 6h), green), ((9v, 2h, 9v, 2h), green), ((8v, 4h, 8v, 4h), green), ((7v, 6h, 7v, 6h), green), ((6v, 3h, 7v, 3h), red), ((5v, 8h, 6v, 8h), red), ((3v, 6h, 3v, 6h), green), ((3v, 2h, 4v, 2h), red)})
([{((6v, 9h, 7v, 10h), black)}, {((10v, 7h, 10v, 8h), black), ((9v, 7h, 10v, 7h), black), ((1v, 7h, 1v, 8h), black), ((1v, 7h, 2v, 7h), black), ((4v, 2h, 4v, 3h), black), ((3v, 3h, 4v, 3h), black), ((10v, 10h, 10v, 10h), black), ((10v, 5h, 10v, 5h), black), ((9v, 1h, 9v, 2h), black), ((8v, 10h, 8v, 10h), black), ((7v, 10h, 7v, 10h), grey), ((5v, 1h, 6v, 1h), black), ((1v, 1h, 1v, 1h), black), ((7v, 3h, 8v, 3h), black), ((6v, 4h, 6v, 4h), black), ((5v, 7h, 6v, 7h), black), ((2v, 9h, 3v, 9h), black), ((2v, 4h, 2v, 4h), black)}], ?)