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#include <cstdio>

int main()
{
	int n;

	scanf("%d", &n);

	int a, p = 1000, s = 0;

	for(int i = 0; i < n; ++i)
	{
		scanf("%d", &a);

		s += a;

		if(a % 2 == 1 && p > a)
			p = a;
	}

	if(s % 2 == 1)
		s -= p;

	if(s == 0)
		printf("NIESTETY\n");
	else
		printf("%d\n", s);

	return 0;
}