53 lines
1.1 KiB
Plaintext
53 lines
1.1 KiB
Plaintext
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) get "input.ivy"
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sample = 13 3 rho 2 2 2 1 2 2 3 2 2 2 1 2 2 3 2 2 2 1 2 2 3 2 2 4 2 2 6 1 2 5 3 2 5 2 1 5 2 3 5
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#input = sample
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) origin 0
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op makeGrid coords =
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lo = min/ transp coords
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hi = max/ transp coords
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coords = 1 1 1 + coords - lo
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dim = 2 + (1 + hi - lo)
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g = ,dim rho 0
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g[dim decode transp coords] = 1
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dim rho g
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op makeBorder dim =
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g = (dim-2) rho 0
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g = 1,(2 0 1 transp g),1
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g = 1,(2 0 1 transp g),1
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g = 1,(2 0 1 transp g),1
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g
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op n twist a = 1 0 2 transp n flip (1 0 2 transp a)
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op grow a = (1 rot a) or (-1 rot a) or (1 flip a) or (-1 flip a) or (1 twist a) or (-1 twist a)
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op sides a = (1 rot a) + (-1 rot a) + (1 flip a) + (-1 flip a) + (1 twist a) + (-1 twist a)
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lava = makeGrid input
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"npoints = "; +/ ,lava
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#lava
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#border = makeBorder rho lava
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#or/, lava and border # should == 0
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op a flood walls =
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x = grow a
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b = (a or x) and not walls
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and/, a == b: a
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b flood walls
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op solve2 lava =
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water = (makeBorder rho lava) flood lava
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+/, lava * sides water
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op solve1 lava =
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air = not lava
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+/, lava * sides air
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"part 1 ="; solve1 lava
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"part 2 ="; solve2 lava
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