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#include <cstdio>
#define MIN(a,b) (a<b ? a:b)

int n,x;

int main()
{
	int res = 0, m = 1001;
	scanf("%d",&n);
	for(int i=0;i<n;i++) {
		scanf("%d",&x);
		res += x;
		if(x%2) m = MIN(m,x);
	}
	if(res % 2) res -= m;
	if(res) printf("%d\n",res);
	else printf("NIESTETY\n");
	return 0;
}