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#include <stdio.h>

int main()
{
	int n, sum = 0, tmp, min = 1001;
	scanf("%d", &n);
	for (int i=0; i<n; ++i)
	{
		scanf("%d", &tmp);
		sum += tmp;
		if (tmp % 2 == 1 && tmp < min)
			min = tmp;
	}
	if (sum % 2 == 0)
		printf("%d\n", sum);
	else if (min != 1001 && sum != min)
		printf("%d\n", sum - min);
	else
		printf("NIESTETY\n");
	return 0;
}