sciyoshi

class a(int):
    def __mul__(self, b):
        return a(int(self) + b)
    def __add__(self, b):
        return a(int(self) + b)
    def __sub__(self, b):
        return a(int(self) * b)

def ev(expr, pt2=False):
    expr = re.sub(r"(\d+)", r"a(\1)", expr)

sciyoshi

import numpy as np
from scipy.ndimage import convolve

LINES = open("inputs/day17").read().splitlines()

dims = 3  # 4 for part 2
steps = 6
front = 2 * steps + 1
filt = np.full((3,) * dims, 1)
filt[(1,) * dims] = 100

sciyoshi

tickets = []
rules = {}
valid_range = set()
total = 0

for l in LINES:
    if l == "your ticket:" or l == "nearby tickets:":
        continue
    if ":" in l:
        n, rule = l.split(": ")

sciyoshi

Keybase proof

I hereby claim:

• I am sciyoshi on github.
• I am sciyoshi (https://keybase.io/sciyoshi) on keybase.
• I have a public key whose fingerprint is 672B C1C9 EBCA 2EF5 C4D5 F0EC 012E AF18 BD36 72DD

To claim this, I am signing this object: