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#include<iostream>
using namespace std;
int n,x,sum,minn;
int main()
{
	ios_base::sync_with_stdio(0);
    cin>>n;
    if(n==1)
    {
        cin>>x;
        if(x%2==0) cout<<x;
        else cout<<"NIESTETY";
        return 0;
    }
    sum=0;
    minn=1001;
    for(int i=0; i<n; i++)
    {
        cin>>x;
        sum=sum+x;
        if(x%2==1 && x<minn)
            minn=x;
    }
    if(sum%2==0)
        cout<<sum;
    else cout<<sum-minn;
}