39 lines
894 B
Python
39 lines
894 B
Python
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EX = "FBFBBFFRLR"
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def main():
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with open("day5.txt", "rt") as f:
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lines = [line.rstrip() for line in f.readlines()]
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# Part 1
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ids = [get_id(c) for c in lines]
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print("Max seat ID:", max(ids))
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# Part 2
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for i in range(min(ids), max(ids)):
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if i not in ids and i-1 in ids and i+1 in ids:
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print("Happy little seat:", i)
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break
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def get_id(code):
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row_base, row_part = 0, 128
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col_base, col_part = 0, 8
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for c in code:
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if c == "F":
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row_part //= 2
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elif c == "B":
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row_part //= 2
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row_base += row_part
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elif c == "L":
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col_part //= 2
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elif c == "R":
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col_part //= 2
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col_base += col_part
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return row_base * 8 + col_base
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# so you're saying it was actually binary?... it's 3AM here.
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if __name__ == "__main__":
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main()
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