[프로그래머스/PYTHON] 삼총사

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

프로그래머스

def solution(number):
    answer = 0
    for i in range(len(number)-2):
        for j in range(i+1,len(number)-1):
            for k in range(j+1,len(number)):
                if number[i]+number[j]+number[k] == 0:
                    answer+=1

            
    return answer