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#include <iostream>

int mina,n,i,a;
long int suma;
using namespace std;



int main()
{
    ios_base::sync_with_stdio(0);
    cin>>n;
    suma=0;mina=1000;
    for (i=1;i<=n;i++) 
    {cin>>a;
     suma=suma+a;
     if ((a%2==1)&&(a<mina)) mina=a;
    }
    if (suma%2==0) cout<<suma;
    if ((suma%2==1)&&(suma-mina>0)) cout<<suma-mina;
    if ((suma%2==1)&&(suma-mina<=0)) cout<<"NIESTETY";
    return 0;
}