advent-of-code-2020/5/a.py

32 lines
657 B
Python

import math as m
lines = open('input').read().splitlines()
def uphalf(t):
return [t[0], t[1] + int(abs(t[0] - t[1])/2) + 1]
def lowhalf(t):
return [t[0] - int(abs(t[0] - t[1])/2) - 1, t[1]]
def bsp(dom, low, up, input):
for p in input:
if p == low:
dom = lowhalf(dom)
else:
dom = uphalf(dom)
if input[-1] == low:
return dom[1]
else:
return dom[0]
ids = []
rowdomain = [127, 0]
coldomain = [7, 0]
for line in lines:
bruh = [
bsp(rowdomain, "F", "B", line[0:7]),
bsp(coldomain, "L", "R", line[7:10])
]
ids.append(bruh[0]*8 + bruh[1])
print(max(ids))