(Python/LV1) 삼총사

문제 출처: https://school.programmers.co.kr/learn/courses/30/lessons/131705

프로그래머스

풀이:

from itertools import combinations
def solution(number):
    count = 0
    for i in list(combinations(number,3)):
        if sum(i) == 0:
            count +=1
    return count