25 lines
515 B
Python
25 lines
515 B
Python
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#!/usr/bin/env python
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# 2021 - Advent Of Code - 2 part 2
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import re
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x = 0
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y = 0
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aim = 0
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re_parse = re.compile('(forward|up|down) (\d+)')
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with open('input.txt') as f:
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for line in f:
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m = re_parse.match(line)
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direction, unit = m.group(1), int(m.group(2))
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if direction == 'up':
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aim -= unit
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elif direction == 'down':
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aim += unit
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elif direction == 'forward':
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x += unit
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y += aim * unit
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print(f'position: ({x}, {y}) => {x*y}')
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