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# -*- coding: utf-8 -*-
from abc import ABC
from dataclasses import dataclass
from typing import Tuple, Iterator, Any
from aoc import BaseAssignment
@dataclass
class Section:
start: int
end: int
def fully_contains(self, other: "Section") -> bool:
return self.start <= other.start and self.end >= other.end
def overlaps(self, other: "Section") -> bool:
return (
self.start <= other.start <= self.end
or self.start <= other.end <= self.end
or self.fully_contains(other)
or other.fully_contains(self)
)
class Assignment(BaseAssignment, ABC):
def parse_section(self, section: str) -> Section:
start, end = section.split("-")
return Section(
start=int(start),
end=int(end),
)
def parse_sections(self, sections: str) -> Tuple[Section, Section]:
section_1, section_2 = sections.split(",")
return (self.parse_section(section_1), self.parse_section(section_2))
def check(self, section_1: Section, section_2: Section) -> bool:
raise NotImplementedError()
def run(self, input: Iterator) -> Any:
overlapping = []
for sections in input:
section_1, section_2 = self.parse_sections(sections)
if self.check(section_1, section_2):
overlapping.append((section_1, section_2))
return len(overlapping)
class AssignmentOne(Assignment):
example_result = 2
def check(self, section_1: Section, section_2: Section) -> bool:
return section_1.fully_contains(section_2) or section_2.fully_contains(
section_1
)
class AssignmentTwo(Assignment):
example_result = 4
def check(self, section_1: Section, section_2: Section) -> bool:
return section_1.overlaps(section_2)
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