[프로그래머스] 의상

문제

from itertools import combinations

def solution(clothes):
    answer = 1
    dic = {}
    for i in clothes:
        if i[1] not in dic.keys():
            dic[i[1]] = [i[0]]
        else:
            dic[i[1]].append(i[0])
    for i in dic.keys():
        answer*=(len(dic[i])+1)
    return answer - 1

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