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#include <cstdio>

int main() {
	int n;
	int sum = 0;
	int minOdd = 1000001;
	int oddCnt = 0;
	int current;

	scanf("%d", &n);
	while (n--) {
		scanf("%d", &current);
		sum += current;
		if (current % 2) {
			++oddCnt;
			if (minOdd > current) {
				minOdd = current;
			}
		}
	}

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

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

	return 0;
}