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#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main (){
    vector<int> hajs;
    int il, war, suma=0,bufor;
    cin>>il;
    for(int i=0; i<il; ++i){
        cin>>war;
        hajs.push_back(war);
        suma+=war;
    }
    if(suma%2==0){
        cout<<suma;
    }else{
        sort(hajs.begin(), hajs.end());
        for(int i=0; i<il; ++i){
            bufor = suma;
            bufor-=hajs[i];
            if(bufor%2==0 && bufor>0){
                cout<<bufor;
                break;
            }
            if(i==il-1){
                cout<<"NIESTETY";
            }
        }
    }
    return 0;
}