백준) 1037번 - python

a = int(input())
b = list(map(int, input().split()))
lst = []
for i in range(a):
    lst.append(b[i])
lst.sort()

if a % 2 == 0:
    print(lst[0] * lst[-1])
else:
    print(lst[int(a/2)] ** 2)