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#!/usr/bin/python3
inp = open("input/day_18.txt")
dat = inp.read().strip()
pos = (0, 0)
sum1 = 0
sum2 = 0
sum_dir = 0
pos_corr = (0, 0)
sum1_corr = 0
sum2_corr = 0
sum_dir_corr = 0
for line in dat.split("\n"):
d, n, col = line.split()
match d:
case "L":
direction = (-1, 0)
case "R":
direction = (1, 0)
case "U":
direction = (0, -1)
case "D":
direction = (0, 1)
length = int(n)
next_pos = (pos[0] + direction[0] * length, pos[1] + direction[1] * length)
sum1 += (pos[0]) * (next_pos[1])
sum2 += (pos[1]) * (next_pos[0])
sum_dir += length
pos = next_pos
cleaned = col.removeprefix("(#").removesuffix(")")
corr_len = int(cleaned[:5], base=16)
match cleaned[5]:
case "0":
direction_corr = (1, 0)
case "1":
direction_corr = (0, 1)
case "2":
direction_corr = (-1, 0)
case "3":
direction_corr = (0, -1)
next_pos_corr = (
pos_corr[0] + direction_corr[0] * corr_len,
pos_corr[1] + direction_corr[1] * corr_len,
)
sum1_corr = sum1_corr + (pos_corr[0]) * (next_pos_corr[1])
sum2_corr = sum2_corr + (pos_corr[1]) * (next_pos_corr[0])
sum_dir_corr += corr_len
pos_corr = next_pos_corr
area = abs(sum1 - sum2) / 2
print(area + sum_dir / 2 + 1)
area_corr = abs(sum1_corr - sum2_corr) / 2
print(area_corr + sum_dir_corr / 2 + 1)
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