Advent of Code 2023 Day 3 Part 1 Solution

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input_text = """
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""".strip()

schematic = list(map(list, input_text.split("\n")))

schematic_height = len(schematic)
schematic_width = len(schematic[0])

neighbor_offset_coords = [
	(-1, -1), (0, -1), (1, -1),
	(-1, 0), (0, 0), (1, 0),
	(-1, 1), (0, 1), (1, 1),
]

all_part_coords = []
for iy, row in enumerate(schematic):
	for ix, char in enumerate(row):
		if char == "." or str(char).isdigit():
			continue

		neighbors = [(ix + nc[0], iy + nc[1]) for nc in neighbor_offset_coords]
		part_numbers = []
		for neighbor in neighbors:
			if not schematic[neighbor[1]][neighbor[0]].isdigit():
				continue
			current_x = neighbor[0]
			while current_x >= 0 and schematic[neighbor[1]][current_x].isdigit():
				current_x -= 1
			if not schematic[neighbor[1]][current_x].isdigit():
				current_x += 1
			all_part_coords.append((current_x, neighbor[1]))

all_part_coords = set(all_part_coords)

part_number_sum = 0
for part_x, part_y in all_part_coords:
	part_number_string = ""
	current_x = part_x
	while current_x < schematic_width and schematic[part_y][current_x].isdigit():
		part_number_string += schematic[part_y][current_x]
		current_x += 1
	part_number_sum += int(part_number_string)

print(part_number_sum)
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