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from __future__ import annotations |
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2
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3
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import pathlib |
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4
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from typing import List, Tuple, cast |
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5
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6
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7
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class LinearRange: |
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8
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9
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def __init__(self, start, stop): |
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self.start = start |
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self.stop = stop |
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13
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def is_subset_of(self, other: LinearRange) -> bool: |
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return self.start <= other.start and self.stop >= other.stop |
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16
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def is_overlapping(self, other: LinearRange) -> bool: |
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return ( |
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self.start <= other.start <= self.stop |
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or self.start <= other.stop <= self.stop |
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or other.start <= self.start <= other.stop |
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) |
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@classmethod |
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def from_string(cls, string: str) -> LinearRange: |
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start, stop = map(int, string.split('-')) |
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return cls(start, stop) |
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28
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def __repr__(self): |
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return f'<{self.start} -> {self.stop}>' |
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30
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31
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32
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def retrieve_groups(lines: List[str]) -> List[Tuple[LinearRange, LinearRange]]: |
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return cast( |
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List[Tuple[LinearRange, LinearRange]], |
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[ |
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tuple(map(LinearRange.from_string, line.split(','))) |
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for line in lines if line.count(',') == 1 |
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] |
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) |
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40
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41
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42
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def count_checked_group(group, func): |
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return sum(func(left, right) or func(right, left) for left, right in group) |
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45
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46
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def main(): |
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content = pathlib.Path('./input.txt').read_text() |
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groups = retrieve_groups(content.splitlines()) |
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50
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print("Part 1:", count_checked_group(groups, LinearRange.is_subset_of)) |
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print("Part 2:", count_checked_group(groups, LinearRange.is_overlapping)) |
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53
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54
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if __name__ == '__main__': |
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main() |
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56
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Sigmanificient /
aoc
