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"""Day 6."""
from collections import Counter
def score_part1(group):
"""Determine score for group in part 1."""
return len(set(group.replace("\n", "")))
def score_part2(group):
"""Determine score for group in part 2."""
group_size = group.count("\n") + 1
counter = Counter(group.replace("\n", ""))
return sum(1 for _, occurences in counter.items() if occurences == group_size)
with open("input") as f:
groups = f.read().rstrip().split("\n\n")
# Part 1
print(sum(map(score_part1, groups)))
# Part 2
print(sum(map(score_part2, groups)))
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