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#include <limits.h>
#include <stdio.h>

int main()
{
	int n;
	scanf("%d", &n);

	int sum=0, minodd=INT_MAX|1;
	for (int i=0; i<n; ++i) {
		int x;
		scanf("%d", &x);
		sum += x;
		if (x & 1 && x < minodd)
			minodd = x;
	}

	if (sum & 1) sum -= minodd;
	if (sum != 0) printf("%d\n", sum);
	else puts("NIESTETY");
	return 0;
}