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#include<cstdio>
int main()
{
	int min=1<<29,sum=0,n;
	scanf("%d",&n);
	while(n--)
	{
		int a;
		scanf("%d",&a);
		sum+=a;
		if(a%2==1 && a<min)min=a;
	}
	if(min!=(1<<29)&& sum%2==1)
		sum-=min;
	if(sum%2==0&& sum!=0)
		printf("%d\n",sum);
	else
		printf("NIESTETY\n");
}