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#include<cstdio>

long long n, s=0, nn=10000000000, tmp;

int main()
{
    scanf("%lld",&n);
    for(int i=0; i<n; i++)
    {
        scanf("%lld",&tmp);
        s+=tmp;
        if(tmp%2==1&&tmp<nn) nn=tmp;
    }
    if(s%2==0)printf("%lld\n", s);
    else if(s>nn)printf("%lld\n",s-nn);
    else printf("NIESTETY\n");
}