27 lines
874 B
Python
27 lines
874 B
Python
#!/usr/bin/env python3
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import re
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from collections import defaultdict
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lines = (x.strip() for x in open("input.txt"))
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points = defaultdict(int)
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for line in lines:
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[x1, y1, x2, y2] = list(map(int, re.match(r"(\d+),(\d+) -> (\d+),(\d+)", line).groups()))
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if x1 == x2:
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for y in range(min(y1, y2), max(y1, y2) + 1):
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key = '{},{}'.format(x1, y)
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points[key] = points[key] + 1
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elif y1 == y2:
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for x in range(min(x1, x2), max(x1, x2) + 1):
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key = '{},{}'.format(x, y1)
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points[key] = points[key] + 1
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else:
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for i in range(0, abs(x1 - x2) + 1):
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key = '{},{}'.format(
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(x1 + i) if x1 <= x2 else (x1 - i),
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(y1 + i) if y1 <= y2 else (y1 - i)
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)
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points[key] = points[key] + 1
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print(sum(1 if val >= 2 else 0 for val in points.values()))
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