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#include <iostream>

using namespace std;

int main()
{
    int ilebanknotow = 0, minimum = 1001;
    unsigned long long int suma = 0;
    bool parzyste = true;
    cin >> ilebanknotow;
    for (int i = 0; i < ilebanknotow; i++)
    {
        int nominal = 0;
        cin >> nominal;
        suma += nominal;
        if (nominal % 2 != 0)
        {
            if (nominal < minimum) minimum = nominal;
            if (parzyste == false ) parzyste = true;
            else parzyste = false;
        }
    }
    if (parzyste == false) suma = suma - minimum;
    if (suma > 0) cout << suma << "\n";
    else cout << "NIESTETY\n";
    return 0;
}