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#include <cstdio>

int main()
{
	int n;
	scanf("%d", &n);
	int min_np = 1000, tmp, suma = 0;
	while (n--) {
		scanf("%d", &tmp);
		if (tmp % 2 == 1)
			if (tmp < min_np)
				min_np = tmp;
		suma += tmp;
	}
	if (suma % 2 == 0) {
		printf("%d\n", suma);
	} else {
		if (suma - min_np == 0)
			printf("NIESTETY\n");
		else
			printf("%d\n", suma - min_np);
	}
	return 0;
}