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  #include <iostream>
 using namespace std;




  int main()
 {
   ios_base::sync_with_stdio(false);
   int n,suma = 0, x, najmn_niep = 1001;
   cin >> n;
   for(int i =0; i < n; i++){
    cin >> x;
   suma += x;
   if(x % 2 == 1)
    najmn_niep = min(najmn_niep, x);
   }
   if(suma % 2 == 1)
    suma -= najmn_niep;
   if(suma!=0)
    cout << suma << endl;
   else
    cout << "NIESTETY" << endl;
    return 0;
 }