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#include<iostream>
using namespace std;
int main ()
{
    int n, mini=1000*1000*1000+7,a, il=0;
    long long suma=0, nie=0;
    cin >> n;
    for(int i=0;i<n;i++)
    {
        cin >>a;
        if(a%2==0)
        {
            suma+=a;
            continue;
        }
        if(a<mini)mini=a;
        nie+=a;
        il++;
    }
//cout      << "SUMA" << suma << " " << il << " " << nie << " " << mini<<"\n";
    if(il%2==0)
    {

    suma+=nie;
    suma-=mini;
        if(suma==0)
        {
            cout << "NIESTETY" <<"\n";
            return 0;
        }
    cout << suma <<"\n";
    return 0;
    }
    if(il%2==1)
    {
        suma+=nie;
        suma-=mini;
        if(suma==0)
        {
            cout << "NIESTETY"<<"\n";
            return 0;
        }
        cout << suma <<"\n";
        return 0;
    }

}