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#include <cstdio>
using namespace std;


int main()
{
	int n;
	int x;
	int sum = 0;
	int minOdd = 1001;
	int numOdd = 0;

	scanf("%d", &n);
	for (int i = 0; i < n; ++i)
	{
		scanf("%d", &x);
		sum += x;
		if (x % 2)
		{
			++numOdd;
			if (minOdd > x)
				minOdd = x;
		}
	}

	if (numOdd % 2)
	{
		sum -= minOdd;
	}

	if (sum == 0)
	{
		printf("NIESTETY\n");
	}
	else
	{
		printf("%d\n", sum);
	}

	return 0;
}