commit 4637a3af44b9c13992dd364bd4564765c57966f5 · kot.pink/aoc

+44

5.py

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       import sys

     

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       import heapq

     

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       from typing import List, Tuple, Optional

     

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       listed_in_range = 0

     

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       file = '5.input' if len(sys.argv) <= 1 else sys.argv[1]

     

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       ranges = []

     

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       numbers = None

     

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       for line in open(file).readlines():

     

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           line = line.strip()

     

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           if line == '':

     

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               numbers = []

     

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           elif numbers is not None:

     

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               numbers.append(int(line))

     

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           else:

     

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               heapq.heappush(ranges, tuple(map(int, line.split('-'))))

     

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       for num in numbers:

     

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           for start, end in ranges:

     

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               if start <= num and num <= end:

     

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                   listed_in_range += 1

     

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                   break

     

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       print(f'p1: {listed_in_range}')

     

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       dedup_ranges = []

     

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       last_start, last_end = None, None

     

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       while ranges:

     

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           start, end = heapq.heappop(ranges)

     

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           if last_start is None:

     

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               last_start, last_end = start, end

     

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           elif start <= last_end: # merge interval

     

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               # print("merge", last_start, last_end, "with", start, end)

     

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               last_start, last_end = last_start, max(last_end, end)

     

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           else: # commit interval

     

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               # print("commit", last_start, last_end)

     

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               dedup_ranges.append((last_start, last_end))

     

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               last_start, last_end = start, end

     

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       dedup_ranges.append((last_start, last_end))

     

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       # print(dedup_ranges)

     

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       print(f'p2: {sum(end - start + 1 for start, end in dedup_ranges)}')

+11

5.test