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43 lines
990 B
43 lines
990 B
import sys
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import typing
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def main() -> int:
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counts_sum = sum([c for c in _iter_group_counts(sys.stdin)])
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print(f"counts_sum={counts_sum}")
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return 0
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def _iter_group_counts(instream: typing.TextIO) -> typing.Generator[int, None, None]:
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for i, group in enumerate(_iter_groups(instream)):
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answers = set(list(group[0]))
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print(f"i={i} initial={answers}")
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for answers_text in group[1:]:
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to_add = set(list(answers_text))
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answers = answers.intersection(set(list(answers_text)))
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print(f"i={i} added={to_add} result={answers}")
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print(f"i={i} final={answers} n={len(answers)}")
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yield len(answers)
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def _iter_groups(instream):
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cur_group = []
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for line in instream:
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line = line.strip()
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if line == "":
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yield cur_group
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cur_group = []
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continue
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cur_group.append(line)
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yield cur_group
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if __name__ == "__main__":
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sys.exit(main())
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