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#include <iostream>
#include <climits>

using namespace std;

int main() {
    int ilosc_banknotow;
    cin >> ilosc_banknotow;

    int min_nieparzysty = INT_MAX;
    long long suma = 0;
    for (int i = 0; i < ilosc_banknotow; ++i) {
        int banknot;
        cin >> banknot;

        suma += banknot;
        if (banknot % 2 == 1 && banknot < min_nieparzysty)
            min_nieparzysty = banknot;
    }

    if (suma % 2 == 1)
        suma -= min_nieparzysty;

    if (suma > 0)
        cout << suma;
    else
        cout << "NIESTETY";
}