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#include <iostream>
#include <algorithm>

using namespace std;

int main() {
	ios_base::sync_with_stdio(false);

	int N;
	cin >> N;
	long int sum = 0;
	long int v;
	int min = 1000;
	int counter = 0;
	for (int i = 0; i < N; ++i) {
		cin >> v;
		sum += v;
		if (v % 2 != 0) {
			++counter;
			if (v < min) {
				min = v;
			}
		}
	}

	if (counter % 2 != 0) {
		sum -= min;
	}

	if (sum == 0) {
		cout << "NIESTETY\n";
	} else {
		cout << sum;
	}

	return 0;
}