You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
953 B
Python
45 lines
953 B
Python
4 years ago
|
import logging
|
||
|
|
lines = [x.strip() for x in open('input', 'r').readlines()]
|
||
|
|
|
||
|
|
east = 0
|
||
|
|
north = 0
|
||
|
|
# 0 = E, 1 = N, 2 = W, 3 = S
|
||
|
|
facing = 0
|
||
|
|
|
||
|
|
|
||
|
|
def serialize():
|
||
|
|
return f'N{north} E{east} F{facing}'
|
||
|
|
|
||
|
|
|
||
|
|
for line in lines:
|
||
|
|
pos = serialize()
|
||
|
|
command = line[0]
|
||
|
|
number = int(line[1:])
|
||
|
|
|
||
|
|
if command in ['S', 'W', 'R']:
|
||
|
|
number *= -1
|
||
|
|
elif command in ['F'] and facing in [2, 3]:
|
||
|
|
number *= -1
|
||
|
|
|
||
|
|
if command in ['N', 'S']:
|
||
|
|
north += number
|
||
|
|
elif command in ['E', 'W']:
|
||
|
|
east += number
|
||
|
|
elif command in ['R', 'L']:
|
||
|
|
facing = (facing + number // 90) % 4
|
||
|
|
elif command in ['F']:
|
||
|
|
if facing % 2 == 0:
|
||
|
|
east += number
|
||
|
|
else:
|
||
|
|
north += number
|
||
|
|
else:
|
||
|
|
raise Exception(f'Unknown command: {command}')
|
||
|
|
|
||
|
|
print(f'{line}: \t{pos} -> {serialize()}')
|
||
|
|
|
||
|
|
print()
|
||
|
|
print(f'{north=} {east=} {facing=}')
|
||
|
|
manhattan = abs(north) + abs(east)
|
||
|
|
print('Solution')
|
||
|
|
print(manhattan)
|