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/*
 *  Copyright (C) 2015  Paweł Widera
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details:
 *  http://www.gnu.org/licenses/gpl.html
 */
#include <iostream>
using namespace std;

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n;
	cin >> n;

	int banknote;
	int total = 0;
	int sum_odd = 0;
	int min_odd = 1001;
	int count_odd = 0;

	for (int i = 0; i < n; ++i) {
		cin >> banknote;

		if (banknote % 2 == 0) {
			total += banknote;
		} else {
			++count_odd;
			sum_odd += banknote;
			min_odd = min(banknote, min_odd);
		}
	}

	if (sum_odd > 0) {
		total += sum_odd;
		if (count_odd % 2 != 0) {
			total -= min_odd;
		}
	}

	if (total == 0) {
		cout << "NIESTETY" << endl;
	} else {
		cout << total << endl;
	}
	return 0;
}