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61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
1 month ago
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#!/usr/bin/env python3
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"""
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Part 1
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"""
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import sys
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import re
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ENGINE_MAP = []
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for line in sys.stdin.readlines():
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line = line.strip()
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ENGINE_MAP.append(line)
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print()
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def get_num(coordinates: tuple):
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"""Get number from ENGINE_MAP"""
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x, y = coordinates
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line = ENGINE_MAP[x]
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number = line[y]
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while y < len(line) - 1 and re.match(r"[0-9]", line[y + 1]):
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y += 1
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number += line[y]
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number = int(number)
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return number
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RESULT = 0
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for x, line in enumerate(ENGINE_MAP):
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for y, symbol in enumerate(line):
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if symbol == "*":
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symbol_numbers = set()
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# print(f"{x},{y}: {symbol}")
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for d_x in [-1, 0, 1]:
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for d_y in [-1, 0, 1]:
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coord_x = x + d_x
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coord_y = y + d_y
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if coord_x < 0 or coord_x > len(ENGINE_MAP) - 1:
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continue
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if coord_y < 0 or coord_y > len(ENGINE_MAP[coord_x]) - 1:
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continue
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if re.match(r"[0-9]", ENGINE_MAP[coord_x][coord_y]):
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while coord_y > 0 and re.match(
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r"[0-9]", ENGINE_MAP[coord_x][coord_y - 1]
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):
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coord_y -= 1
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symbol_numbers.add((coord_x, coord_y))
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if len(symbol_numbers) == 2:
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num_1 = get_num(list(symbol_numbers)[0])
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num_2 = get_num(list(symbol_numbers)[1])
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gear_ratio = num_1 * num_2
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print(f"Gear found at {x},{y}. {gear_ratio=}")
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RESULT += gear_ratio
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print()
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print(RESULT)
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