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from collections import defaultdict, namedtuple
from utils import open_day
Pos = namedtuple('Pos', ['x', 'y'])
vents = [
tuple(
Pos(*map(int, h.split(',')))
for h in l.rstrip().split(' -> ')
)
for l in open_day(5).read().rstrip().split('\n')
]
def gen(frm, to):
if to < frm:
to = to - 1
increment = -1
else:
to = to + 1
increment = 1
for i in range(frm, to, increment):
yield i
points = defaultdict(int)
for vent in vents:
if vent[0].x == vent[1].x:
for y in gen(vent[0].y, vent[1].y):
points[(vent[0].x, y)] += 1
elif vent[0].y == vent[1].y:
for x in gen(vent[0].x, vent[1].x):
points[(x, vent[0].y)] += 1
print(sum(n >= 2 for n in points.values()))
for vent in vents:
if vent[0].x != vent[1].x and vent[0].y != vent[1].y:
for x, y in zip(gen(vent[0].x, vent[1].x), gen(vent[0].y, vent[1].y)):
points[(x, y)] += 1
print(sum(n >= 2 for n in points.values()))
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