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43 lines
642 B
43 lines
642 B
import math
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import numpy as np
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with open("../input/05-01.txt") as f:
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input = f.read().splitlines()
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def partition(seq, lb, ub, trigger, ret):
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for idx, part in enumerate(seq):
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amt = math.floor((ub - lb)/2) + 1
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if (part == trigger):
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ub -= amt
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else:
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lb += amt
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return(ub if (seq[-1] == trigger) else lb)
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def get_seat(x):
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return(
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(partition(x[0:7], 0, 127, "F", "F") * 8) +
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partition(x[7:10], 0, 7, "L", "L")
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)
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res = [ get_seat(bpass) for bpass in input ]
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# 05-01
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res.sort()
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max(res)
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# 05-02
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res.insert(0, res[0])
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idx = np.where(np.diff(res) > 1)
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res.pop(0)
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res[idx[0][0]] - 1
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