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#include <stdio.h>

int main()
{
	int n;
	scanf("%d", &n);
	int *bills = new int[n];
	for(int i = 0; i < n; i++)
	{
		scanf("%d", &bills[i]);
	}
	
	int sum = 0;
	for(int i = 0; i < n; i++)
	{
		sum += bills[i];
	}
	
	if(!(sum & 1))
	{
		printf("%d", sum);
		return 0;
	}
	
	int minOdd = 10000;
	for(int i = 0; i < n; i++)
	{
		if((bills[i] & 1) && bills[i] < minOdd)
		{
			minOdd = bills[i];
		}
	}
	
	sum -= minOdd;
	if(sum == 0)
	{
		printf("NIESTETY");
	}
	else
	{
		printf("%d", sum);
	}
	
	return 0;
}