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#include <stdio.h>

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