PythonでJOI難易度5を埋める #23
考えたこと
itertoolsで順列作って,数える
from itertools import permutations n = int(input()) k = int(input()) cards = [input() for _ in range(n)] cnt_set = set([]) per = list(permutations(cards, k)) for i in range(len(per)): cnt_set.add(''.join(per[i])) print(len(cnt_set))