42 lines
1.3 KiB
Python
42 lines
1.3 KiB
Python
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""" https://adventofcode.com/2019/day/8 """
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def readFile():
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with open(f"{__file__.rstrip('code.py')}input.txt", "r") as f:
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return f.read()[:-1]
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def getLayers(input, width, height):
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layers = []
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for i in range(0, len(input), width*height):
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layers.append([input[i+width*x:i+width*(x+1)] for x in range(height)])
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return layers
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def getPicture(layers):
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width, height = len(layers[0][0]), len(layers[0])
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return "\n".join(["".join([getColor(layers, w, h) for w in range(width)]) for h in range(height)])
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def getColor(layers, w, h):
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for layer in layers:
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if layer[h][w] != "2": return layer[h][w]
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return "2"
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def part1(layers):
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min, minLayer = None, None
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for layer in layers:
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cnt = sum([l.count("0") for l in layer])
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if min is None or cnt < min:
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min, minLayer = cnt, layer
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return sum([l.count("1") for l in minLayer]) * sum([l.count("2") for l in minLayer])
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def part2(layers):
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picture = getPicture(layers)
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return f"\n{picture.replace('0', ' ').replace('1', 'X')}"
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def test():
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assert getLayers("123456789012",3,2) == [["123","456"],["789","012"]]
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assert getPicture(getLayers("0222112222120000",2,2)) == "01\n10"
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if __name__ == "__main__":
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test()
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vals = getLayers(readFile(), 25, 6)
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print(f"Part 1: {part1(vals)}")
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print(f"Part 2: {part2(vals)}")
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