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#include <iostream>
#include <climits>

using namespace std;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int n;
	cin >> n;

	int a, odds_count = 0, odds_min = INT_MAX, sum = 0;

	for (int i = 0; i < n; i++) {
		cin >> a;
		if (a % 2 == 0) sum += a;
		else {
			odds_count++;
			odds_min = min(odds_min, a);
			sum += a;
		}
	}
	if (sum % 2 != 0 && odds_count > 0) sum -= odds_min;
	if (sum != 0) cout << sum;
	else cout << "NIESTETY";

	return 0;
}