def puzzle12():
lights_on = dict()
f.seek(0)
for line in f:
parts = line.split()
if parts[0] == 'toggle':
start = get_point_from_text(parts[1])
end = get_point_from_text(parts[3])
points = Point.create_rectangle_of_points(start, end)
difference = 2
elif parts[0] + parts[1] == 'turnon':
start = get_point_from_text(parts[2])
end = get_point_from_text(parts[4])
points = Point.create_rectangle_of_points(start, end)
difference = 1
elif parts[0] + parts[1] == 'turnoff':
start = get_point_from_text(parts[2])
end = get_point_from_text(parts[4])
points = Point.create_rectangle_of_points(start, end)
difference = -1
for point in points:
try:
lights_on[point] += difference
except KeyError:
lights_on[point] = difference
if lights_on[point] < 0:
lights_on[point] = 0
return sum(lights_on.values())
def puzzle11():
lights_on = set()
f.seek(0)
for line in f:
parts = line.split()
if parts[0] == 'toggle':
start = get_point_from_text(parts[1])
end = get_point_from_text(parts[3])
lights_on = lights_on.symmetric_difference(Point.create_rectangle_of_points(start, end))
elif parts[0] + parts[1] == 'turnon':
start = get_point_from_text(parts[2])
end = get_point_from_text(parts[4])
lights_on = lights_on.union(Point.create_rectangle_of_points(start, end))
elif parts[0] + parts[1] == 'turnoff':
start = get_point_from_text(parts[2])
end = get_point_from_text(parts[4])
lights_on = lights_on.difference(Point.create_rectangle_of_points(start, end))
return len(lights_on)
