#include <stdio.h>
#include <limits>

int main()
{
	int n;
	scanf("%d", &n);

	int sum = 0, value = 0, smallestOdd = std::numeric_limits<int>::max();
	for (int i = 0; i < n; ++i)
	{
		scanf("%d", &value);
		sum += value;
		if (value % 2 == 1 && value < smallestOdd)
			smallestOdd = value;
	}

	if (sum == smallestOdd)
	{
		printf("NIESTETY\n");
		return 0;
	}

	if (sum % 2 == 0)
		printf("%d\n", sum);
	else
		printf("%d\n", sum - smallestOdd);

	return 0;
}