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#include<iostream>
using namespace std;
int main ()
{
    ios_base::sync_with_stdio(0);
    int n, m;
    cin>>n;
    long long int suma=0;
    int naj=1001;
    for (int i=0; i<n; i++)
    {
        cin>>m;
        suma=suma+m;
        if (m%2==1&&m<naj)
        {
            naj=m;
        }

    }
    if (suma%2==0)
        cout<<suma;
    else
    {
        suma=suma-naj;
        if (suma==0)
            cout<<"NIESTETY";
        else
            cout<<suma;
    }
}