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#include <cstdio>
#include <climits>

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