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#include "stdio.h"

int main()
{
	int cnt = 0;

	scanf("%i", &cnt);

	int sum = 0;
	int minOdd = 1000000000;
	for (int i = 0; i < cnt; i++)
	{
		int a;
		scanf("%i", &a);
		sum += a;
		if ((a & 1) == 1 && a < minOdd)
		{
			minOdd = a;
		}
	}

	if (sum == minOdd)
	{
		printf("NIESTETY\n");
	}
	else if ((sum & 1) == 0)
	{
		printf("%i\n", sum);
	}
	else
	{
		printf("%i\n", sum - minOdd);
	}

	return 0;
}