From 84d8230517d97bd8e57c718b7761e47ce57696ed Mon Sep 17 00:00:00 2001 From: Thibaud Date: Tue, 5 Dec 2023 17:55:40 +0100 Subject: [PATCH] wip --- day5/day5.py | 64 +++++++++++++++++ day5/example.txt | 33 +++++++++ day5/input.txt | 183 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 280 insertions(+) create mode 100644 day5/day5.py create mode 100644 day5/example.txt create mode 100644 day5/input.txt diff --git a/day5/day5.py b/day5/day5.py new file mode 100644 index 0000000..03dfee5 --- /dev/null +++ b/day5/day5.py @@ -0,0 +1,64 @@ +from itertools import zip_longest + + +def grouper(n, iterable, fillvalue=None): + "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx" + args = [iter(iterable)] * n + return zip_longest(fillvalue=fillvalue, *args) + + +def part1(sections): + # consume seed section + _, seeds = next(sections) + seeds = [int(s) for s in seeds] + print(seeds) + + for name, numbers in sections: + # item: range_start, len, offset + #mapping = [] + #for dst, src, length in grouper(3, numbers): + #mapping.append((src, lenght, dst)) + #src = range(int(src), int(src) + int(length)) + #dst = range(int(dst), int(dst) + int(length)) + #for k, v in zip(src, dst): + # mapping[k] = v + + # apply current mapping on input (using linear search) + new_seeds = [] + for seed in seeds: + for dst, src, length in grouper(3, numbers): + src, length, dst = int(src), int(length), int(dst) + end = dst + (length - 1) + if src <= seed < end: + new_seed = seed + (dst-src) + new_seeds.append(new_seed) + break + else: + new_seeds.append(seed) + seeds = new_seeds + + print(seeds) + + + + #seeds = [mapping.get(s, None) or s for s in seeds] + + print(f"Part 1, lowest location number = {min(seeds)}") + +def parse_input(infile): + with open(infile) as f: + sections = f.read().split("\n\n") + sections = ((title, numbers) for title, numbers in (s.split(":") for s in sections)) + sections = ((title, numbers.split()) for title, numbers in sections) + return sections + + +if __name__ == "__main__": + import sys + import os + SCRIPTPATH = os.path.dirname(os.path.realpath(__file__)) + + infile = next(iter(sys.argv[1:]), None) + sections = parse_input(infile or os.path.join(SCRIPTPATH, "example.txt")) + part1(sections) + diff --git a/day5/example.txt b/day5/example.txt new file mode 100644 index 0000000..f756727 --- /dev/null +++ b/day5/example.txt @@ -0,0 +1,33 @@ +seeds: 79 14 55 13 + +seed-to-soil map: +50 98 2 +52 50 48 + +soil-to-fertilizer map: +0 15 37 +37 52 2 +39 0 15 + +fertilizer-to-water map: +49 53 8 +0 11 42 +42 0 7 +57 7 4 + +water-to-light map: +88 18 7 +18 25 70 + +light-to-temperature map: +45 77 23 +81 45 19 +68 64 13 + +temperature-to-humidity map: +0 69 1 +1 0 69 + +humidity-to-location map: +60 56 37 +56 93 4 diff --git a/day5/input.txt b/day5/input.txt new file mode 100644 index 0000000..7cd63b1 --- /dev/null +++ b/day5/input.txt @@ -0,0 +1,183 @@ +seeds: 629551616 310303897 265998072 58091853 3217788227 563748665 2286940694 820803307 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