33 lines
971 B
Python
33 lines
971 B
Python
#!/usr/bin/env python3
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import re
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import numpy as np
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lines = (x.strip() for x in open("input.txt"))
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REGEX_RANGES = re.compile(r"^([a-z ]+): (\d+)-(\d+) or (\d+)-(\d+)$")
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REGEX_TICKET = re.compile(r"^(\d+,)*\d+$")
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read_step = 0
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names = np.array([], dtype=str)
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groups = []
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tickets = []
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for line in lines:
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match = REGEX_RANGES.match(line)
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if match:
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m_groups = match.groups()
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names = np.append(names, [m_groups[0]])
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groups.append(list(map(int, m_groups[1:])))
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match = REGEX_TICKET.match(line)
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if match:
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ticket = tuple(map(int, line.split(',')))
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tickets.append(ticket)
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groups = np.array(groups)
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tickets = np.array(tickets, dtype=np.int32)
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ranges = np.concatenate((groups[:, :2], groups[:, 2:]), axis=0)
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valids = np.full(tickets.shape, False)
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for idx, elem in np.ndenumerate(tickets):
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valids[idx] = np.any(np.logical_and(ranges[:, 0] <= elem, elem <= ranges[:, 1]))
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print(np.ma.array(tickets, mask=valids).sum())
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