From 394cd9d63abac6257829da1a28f6e90aea007806 Mon Sep 17 00:00:00 2001 From: Luke Hubmayer-Werner Date: Fri, 18 Dec 2020 15:58:52 +1030 Subject: [PATCH] 2020 day 18 (cute) --- 2020/day18.py | 22 +++ 2020/input18 | 377 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 399 insertions(+) create mode 100644 2020/day18.py create mode 100644 2020/input18 diff --git a/2020/day18.py b/2020/day18.py new file mode 100644 index 0000000..90b21a1 --- /dev/null +++ b/2020/day18.py @@ -0,0 +1,22 @@ +import re +with open('input18', 'r') as file: + input = [l.strip() for l in file.readlines()] + +class fakeInt(int): # We already have a perfectly good parser, no need to write our own :D + def __add__(self, other): # If we don't define this we get regular ints which don't follow our made-up rules + return fakeInt(int.__add__(self, other)) + def __sub__(self, other): + return fakeInt(int.__mul__(self, other)) + +result = sum([eval(re.sub('(\d+)', r'fakeInt(\1)', line.replace('*','-'))) for line in input]) +print(f'Part 1: {result}') + + +class fakeInt2(int): + def __mul__(self, other): + return fakeInt2(int.__add__(self, other)) + def __sub__(self, other): + return fakeInt2(int.__mul__(self, other)) + +result = sum([eval(re.sub('(\d+)', r'fakeInt2(\1)', line.replace('*','-').replace('+','*'))) for line in input]) +print(f'Part 2: {result}') diff --git a/2020/input18 b/2020/input18 new file mode 100644 index 0000000..fc982ba --- /dev/null +++ b/2020/input18 @@ -0,0 +1,377 @@ +2 * (9 + 9 * (7 + 8 * 6 + 3 * 5) * 6 * 3) * ((6 + 4 * 3) + 9 + (9 * 8 * 6 * 7 * 8 * 9) * 2 * (6 + 2)) + 6 +6 + (7 * (2 + 2 + 5 + 9 + 6)) * (4 * 8 * 8 * 3 * 6) + 7 * 2 * 5 +(4 * (6 * 7 * 3) + (6 + 8 + 9)) + (5 * (9 * 3 * 6 + 2)) +5 * ((5 * 3 + 2 + 5 * 9) + (4 + 5 + 3 * 4 + 2) * 7 * 2 + 3) +4 + 4 * (9 * (9 + 5 * 4 * 3 + 4) + 8 * 3) +(5 * 4 * 3 * 4 * 3) + 5 +8 * 4 + 8 * (2 * 5 * 7 + (2 + 7 + 5 + 7) + 5) + (3 * 9) + 2 +6 + (3 + 9 + 3 + 8 + (4 * 5)) * 2 * (5 * 7 + 4 + 3) +8 + 4 + 2 * (8 + (5 * 8) + 8 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