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#include <iostream>

using namespace std;

int main() {

	ios::sync_with_stdio(false);
	unsigned long long n, a, i, sum = 0, minA = 1000;
	cin >> n;

	for (i = 0; i < n; ++i) {
		cin >> a;
		if ((a < minA) && (a % 2 == 1)) {
			minA = a;
		}
		sum += a;
	}

	if (sum % 2 == 0) {
		cout << sum << endl;
	} else if ((minA != 1000) && (n > 1)) {
		cout << (sum - minA) << endl;
	} else {
		cout << "NIESTETY" << endl;
	}

	return 0;
}