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#include <cstdio>

int N, a, s, am, ac;

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

	s = 0;
	am = 1000;
	ac = 0;
	for (int i = 0; i < N; i++) {
		scanf("%d", &a);
		s += a;
		if (a % 2 == 1) {
			ac = 1 - ac;
			if (a < am) {
				am = a;
			}
		}
	}

	s -= ac * am;
	if (s > 0) {
		printf("%d\n", s);
	} else {
		printf("NIESTETY\n");
	}

	return 0;
}