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#include <cstdio>

int main()
{
unsigned long long i,n,a,suma=0, nn=0;

scanf("%llu",&n);

for(i=0;i<n;i++){
	scanf("%llu",&a);
	suma+= a;
	if(a%2 == 1 && (a < nn || nn == 0)) nn = a;
}

if(suma%2 == 1) suma-= nn;
if(suma > 0)
	printf("%llu\n",suma);
else
	printf("NIESTETY");

return 0;
}