题解 | #糖果俱乐部#

 #include<bits/stdc++.h>
 using namespace std;
 int main ()
     {
       int a[10000010];
       int n,sum=0,maxn=100010;
           cin>>n;
         for (int i=1;i<=n;i++)
              {
             cin>>a[i];
             sum+=a[i];
      if (a[i]<maxn&&a[i]%2==1)maxn=a[i];
              }
    if (sum%2==0) cout<<sum;
    else cout <<sum-maxn;
       return 0;
    }