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#include <stdio.h>
using namespace std;

int main()
{
	int n;
	scanf("%d", & n);
	unsigned int sum = 0;
	unsigned short smallest = 1000;

	for (int i = 0; i < n; i++)
	{
		unsigned short x;
		scanf("%hu", &x);
		sum += x;
		if (x < smallest && x % 2 != 0)
			smallest = x;
	}

	if (sum % 2 != 0)
		sum -= smallest;

	if (sum > 0)
		printf("%d", sum);
	else
		printf("NIESTETY");


	return 0;
}