n = int(input())
data = list(map(int, input().split()))
data.sort()
set1 = set(data)
flag = False
for s in set1:
blist = [i for i in data if i > s]
slist = [i for i in data if i < s]
if len(blist) == len(slist):
print(s, end=" ")
flag = True
if flag == False:
print("-1")
CCF Python题解(100分)201612-1 中间数
最新推荐文章于 2022-12-12 16:09:01 发布