1039AC的python代码

[nounome]

from collections import defaultdict

students = defaultdict(list)
_, num_class = input().split()
for _ in range(int(num_class)):
    id, num_stu = input().split()
    if num_stu=='0':continue
    for i in input().split():
        students[i].append(int(id))
for i in input().split():
    if len(students[i])==0:
        print(i, len(students[i]))
    else:
        print(i, len(students[i]), " ".join([str(x) for x in sorted(students[i])]))