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#include <cstdio>

int main()
{
	int n, minnp, sum, lastnp, a;
	minnp = 99999;
	sum = 0;
	lastnp = -1;
	scanf("%d", &n);
	while (n--) {
		scanf("%d", &a);
		if (a % 2) {
			if (a < minnp)
				minnp = a;

			if (lastnp == -1){
				lastnp = a;
			}
			else {
				sum += a + lastnp;
				lastnp = -1;
			}
		}
		else {
			sum += a;
		}
	}
	if (lastnp != -1 && minnp != 99999 && lastnp > minnp && sum > 0) {
		sum -= minnp;
		sum += lastnp;
	}
	if (sum == 0)
		printf("NIESTETY\n");
	else
		printf("%d\n", sum);

	return 0;
}