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#include <iostream>
using namespace std;

int main()
{
    std::ios_base::sync_with_stdio(false);
    int a, n, minn, suma;
    cin >> n;
    suma = 0;
    minn = 9999999;
    for (int i = 0; i < n; i++)
    {
        cin >> a;
        suma += a;
        if (a % 2 == 1 && a < minn)
            minn = a;
    }
    if (suma % 2 == 1)
        suma -= minn;
    if (suma == 0)
        cout << "NIESTETY";
    else
        cout << suma;
    return 0;
}