题解 | 灵异背包？

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