题解 | 生词篇章查询
生词篇章查询
https://www.nowcoder.com/practice/3790042b79114ae5bd9f6eccdaeadfcd
from collections import defaultdict
import sys
n, d = int(sys.stdin.readline()), defaultdict(set)
for i in range(1, n + 1):
s = sys.stdin.readline().split()
for x in s[1:]:
d[x].add(i)
m = int(sys.stdin.readline())
for _ in range(m):
w = sys.stdin.readline().strip()
print(" ".join(map(str, sorted(list(d[w])))) if w in d else "")