题解 | 灵异背包？
灵异背包？
https://www.nowcoder.com/practice/812bcedbbe244c9b86e459a244af5ddf
import sys
m=int(input())
arr=list(map(int,input().split()))
arr.sort()
result=sum(arr)
if sum(arr)%2==0:
print(sum(arr))
else:
for i in arr:
if i%2==1:
result-=i
print(result)
break
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