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#include<iostream>

using namespace std;

int main()
{
	int n;
	long long suma = 0;
	cin >> n;
	//int *tab = new int[n];
	int pom, min=1000000;
	for (int i = 0; i < n; i++)
	{
		cin >> pom;
		suma += pom;
		if (pom % 2 == 1 && pom < min) min = pom;
	}

	if (suma % 2 == 0) cout << suma;
	else if (min != 1000000 && suma - min > 0) cout << (suma - min);
	else cout << "NIESTETY";

	return 0;
}