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#include<cstdio>
int main()
{
	int mi=1000000009;
	int n;
	scanf("%d", &n);
	int sum=0;
	for(int i=1; i<=n; i++)
	{
		int x;
		scanf("%d", &x);
		sum+=x;
		if(x%2==1 && x<mi)
			mi=x;
	}
	if(sum%2==1)
		sum-=mi;
	if(sum<=0)
		printf("NIESTETY\n");
	else
		printf("%d\n", sum);
}