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#include "stdio.h"

int main(int argc, char const *argv[])
{
	int n, curr, sum;
	int minOdd = 1000007;
	int evenNrOfOdd = true;

	scanf("%d", &n);

	for (int i = 0; i < n; ++i)
	{
		scanf("%d", &curr);
		sum += curr;

		if (curr%2 == 1) {
			evenNrOfOdd = !evenNrOfOdd;
			if (curr < minOdd) {
				minOdd = curr;
			}
		}
	}

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

	return 0;
}