https://programmers.co.kr/learn/courses/30/lessons/68644
νμ΄
# νλ‘κ·Έλλ¨Έμ€ 1λ¨κ³ - λ κ° λ½μμ λνκΈ°
from itertools import combinations
def solution(numbers):
answer = set()
for i in list(combinations(numbers, 2)):
answer.add(sum(i))
return sorted(answer)