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#include<iostream>
#include<algorithm>
using namespace std;
int main(){
 int n,np=0,suma=0;
 cin>>n;
 int tab[n];
 for(int i=0;i<n;i++){
 cin>>tab[i];
 if(tab[i]%2==1)np++;}
 
 sort(tab,tab+n);  
 if(np%2==1)np-=1; 
 for(int i=0;i<n;i++){
         if(tab[i]%2==0)
         suma+=tab[i];
         
         else if(tab[i]%2==1 and np>0){suma+=tab[i];
              np--;}
              }
    if(suma>0)cout<<suma;
    else cout<<"NIESTETY";
    
    
}