题解 | 灵异背包？
灵异背包？
https://www.nowcoder.com/practice/812bcedbbe244c9b86e459a244af5ddf
n = int(input())
n1 = list(map(int, input().split()))
j = []
s = 0
for i in n1:
s += i
if i % 2 != 0:
j.append(i)
if s % 2 != 0:
s -= min(j)
print(s)
