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27 lines
867 B
27 lines
867 B
2 years ago
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#reading input
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with open('input18.txt','r') as f:
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inp = f.read().splitlines(keepends=False)
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cubes = []
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sides = {}
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surface = 0
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for line in inp:
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x, y, z = line.split(',')
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cubes.append((int(x), int(y), int(z)))
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#main function
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for cube in cubes:
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x, y, z = cube
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sides[((x - 1, x),(y, y),(z, z))] = sides.get(((x - 1, x),(y, y),(z, z)), 0) + 1
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sides[((x, x + 1),(y, y),(z, z))] = sides.get(((x, x + 1),(y, y),(z, z)), 0) + 1
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sides[((x, x),(y - 1, y),(z, z))] = sides.get(((x, x),(y - 1, y),(z, z)), 0) + 1
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sides[((x, x),(y, y + 1),(z, z))] = sides.get(((x, x),(y, y + 1),(z, z)), 0) + 1
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sides[((x, x),(y, y),(z - 1, z))] = sides.get(((x, x),(y, y),(z - 1, z)), 0) + 1
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sides[((x, x),(y, y),(z, z + 1))] = sides.get(((x, x),(y, y),(z, z + 1)), 0) + 1
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for side in sides:
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if sides[side] == 1:
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surface += 1
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print(surface)
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