My Advent of Code solutions in Python.
kevinyap.ca/2019/12/going-fast-in-advent-of-code/
advent-of-code
python
Add solution for 2018/14
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2018/day14.py
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2018/day14.py
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import fileinput
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from itertools import count
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def slice_to_str(slice):
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return ''.join(str(n) for n in slice)
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INPUT = int(fileinput.input()[0])
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input_str = str(INPUT)
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input_len = len(input_str)
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recipes = [3, 7]
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recipes_len = 2
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elf_1 = 0
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elf_2 = 1
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part_1 = None
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part_2 = None
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while part_1 is None or part_2 is None:
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score = recipes[elf_1] + recipes[elf_2]
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if score >= 10:
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recipes.append(score // 10)
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recipes.append(score % 10)
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recipes_len += 2
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else:
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recipes.append(score)
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recipes_len += 1
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elf_1 = (elf_1 + recipes[elf_1] + 1) % recipes_len
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elf_2 = (elf_2 + recipes[elf_2] + 1) % recipes_len
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if part_1 is None and recipes_len > INPUT + 10:
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part_1 = slice_to_str(recipes[INPUT:INPUT+10])
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if part_2 is None:
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if score >= 10 and slice_to_str(recipes[-1-input_len:-1]) == input_str:
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part_2 = recipes_len - input_len - 1
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if slice_to_str(recipes[-input_len:]) == input_str:
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part_2 = recipes_len - input_len
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print "Scores of recipes after puzzle input:", part_1
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print "Number of recipes before puzzle input:", part_2
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2018/inputs/14.txt
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2018/inputs/14.txt
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