20 lines
570 B
Python
20 lines
570 B
Python
#!/usr/bin/env python3
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lines = (x.strip() for x in open("input.txt"))
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points = set()
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# 1311,895
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for line in lines:
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if line.startswith("fold along x="):
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mark = int(line[13:])
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points = set((x if mark > x else 2*mark-x, y) for x, y in points if mark != x)
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break
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elif line.startswith("fold along y="):
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mark = int(line[13:])
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points = set((x, y if mark > y else 2*mark-y) for x, y in points if mark != y)
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break
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elif len(line) > 0:
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points.add(tuple(int(num) for num in line.split(",")))
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print(len(points))
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