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#include <cstdio>
int tab[1000100];
int main () {
	int n;
	int sum=0, min=1000000000;
	scanf("%d", &n);
	for(int i=0, buf;i<n;++i)
	{
		scanf("%d", &buf);
		sum+=buf;
		if(min>buf && buf%2) min=buf;
	}
	
	if(sum%2)
	{
		if(sum==min)
		printf("NIESTETY\n");
		else
		printf("%d\n",  sum-min);
	}
	else
	printf("%d\n",  sum);
	
	
}