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// kie.cpp : Defines the entry point for the console application.
//

#include "iostream"

using namespace std;
int main()
{
	int n;
	cin >> n;
	int sum = 0;
	int odC = 0;
	int smallest = 1000000000;
	for (int i = 0; i < n; i++) {
		int x;
		cin >> x;
		sum += x;
		if (x % 2 == 1) {
			odC++;
			if (x < smallest)smallest = x;
		}
	}
	if (odC % 2 == 1)sum -= smallest;
	if (sum == 0)
		cout << "NIESTETY\n";
	else
		cout << sum << "\n";
	return 0;
}