52 lines
1.2 KiB
Python
52 lines
1.2 KiB
Python
from os.path import join, dirname
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from itertools import product
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from typing import Tuple
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def from_binary(code: str, high: str) -> int:
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return int(''.join([
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'1' if char == high else '0'
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for char in code
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]), 2)
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def read_seat(seat) -> Tuple[int, int]:
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row_raw = seat[:-3]
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column_raw = seat[-3:]
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row = from_binary(row_raw, 'B')
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column = from_binary(column_raw, 'R')
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return row, column
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def seat_code(row: int, column: int) -> int:
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return row * 8 + column
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data = join(dirname(__file__), '../data.txt')
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with open(data) as f:
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seats = f.read().strip().split('\n')
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free = list(product(range(4, 126), range(8)))
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maximum = 0
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for seat in seats:
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row, column = read_seat(seat)
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m = row * 8 + column
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maximum = max(maximum, m)
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free.remove((row, column))
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print(f"Highers ID:\t{maximum}")
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# Find the remaining seat
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row_max = 0
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row_min = 128
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for row, _ in free:
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row_max = max(row_max, row)
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row_min = min(row_min, row)
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remaining = [
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(row, column)
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for row, column in free
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if row >= row_min + 1 and row <= row_max - 2
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][0]
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my_ticket = seat_code(*remaining)
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print(f"My Ticket:\t{my_ticket}")
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