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AdventOfCode/day_3/part_1.py
2020-12-06 20:33:17 -07:00

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835 B
Python

# with open("input", "r") as data:
data = input()
unique_houses = 1
current_coord = [0, 0]
historic_coords = [f"{current_coord[0]},{current_coord[1]}"]
# Get each instruction
for direction in data:
# Heading north
if direction == "^": current_coord[1] += 1
# Heading south
elif direction == "v": current_coord[1] -= 1
# Heading west
elif direction == "<": current_coord[0] -= 1
# Heading east
elif direction == ">": current_coord[0] += 1
# Unknown input
else: raise Exception(f"InputError: Unexpected input: {direction}")
# Check if we've been here already
coord_string = f"{current_coord[0]},{current_coord[1]}"
if not (coord_string in historic_coords):
# New house, keep track of it
unique_houses += 1
historic_coords += [coord_string]
print(f"Total Houses With At Least One Present: {unique_houses}")