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#include <iostream>

using namespace std;

int main()
{
    long long int min=1000000007, n, a;

    cin >> n;

    long long int tab[n], sum=0;

    for (int i=0; i<n; i++)
    {
        cin >> tab[i];
        sum+=tab[i];
        if(tab[i]<min && tab[i]%2!=0)
            min=tab[i];
    }

     if(n==1 && tab[0]%2!=0)
    {
        cout << "NIESTETY";
        return 0;
    }

    if(sum%2==0)
        cout << sum;
    else
    {
        cout << sum-min;
        return 0;
    }
}