21 lines
487 B
Python
21 lines
487 B
Python
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text: str
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with open("input.txt") as f:
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text = f.read()
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lines: list[str] = text.splitlines()
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total: int = 0
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for line in lines:
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numbers: list[int] = list(map(int, line.split(" ")))
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direction: int = (numbers[1] - numbers[0])
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if (direction == 0):
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continue
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direction = direction / abs(direction)
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for x1, x2 in zip(numbers[:-1], numbers[1:]):
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if ((x2 - x1) * direction not in range(1, 4)):
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break
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else:
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total += 1
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print(total)
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