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#include <iostream>
using namespace std;

int main() {
	int n, tmp;
	int sum=0;
	int m = 100000;
	scanf("%d", &n);
	for(int i=0;i<n;i++)
		{
			scanf("%d", &tmp);
			sum += tmp;
			if (tmp%2==1 && tmp<m)
				m = tmp;
		}
	
	if(sum%2==0)
		printf("%d\n", sum);
	else
		if(n==1)
			printf("NIESTETY\n");
		else
			printf("%d\n", sum-m);
		
	return 0;
}