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#include <stdio.h>

int main(void)
{
	int n,a;
	long long int s=0;
	int i=0,m=10000;
	scanf("%d",&n);
	for(;i<n;++i)
	{
		scanf("%d",&a);
		s+=a;
		if(a%2 && m>a)m=a;
	}
	if(s%2)
	{
		if(m>1000 || s-m == 0)printf("NIESTETY\n");
		else printf("%lld\n",s-m);
		return 0;
	}
	printf("%lld\n",s);
	return 0;
}