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#include <stdio.h>

unsigned long long int min=10E9, sum=0, tmp=0, n=0, i=0;

int main(){
	scanf("%i", &n);
	for (i=0;i<n;i++){
		scanf("%i", &tmp);
		if ((tmp<min)&&(tmp&1)) min=tmp;
		sum+=tmp;
	}
	tmp=sum-min;
	if (!(sum&1)) printf("%llu\n", sum);
	else if (tmp) printf("%llu\n", tmp); else printf("NIESTETY\n");
	return 0;
}