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#include <iostream>
#include <vector>
using namespace std;
#define int long long

main(){
    ios_base::sync_with_stdio(false);
    int n;
    cin >> n;
    vector<int> P;
    vector<int> N;
    int sum=0;
    int miin=1e9;
    for(int i=0;i<n;i++){
        int num;
        cin >> num;
        sum+=num;
        if(num%2==0){
            P.push_back(num);
        }
        else{
            N.push_back(num);
            miin=min(miin,num);
        }
    }
    if(n==1 && P.size()==0){
        cout << "NIESTETY"<< endl;
    }
    else{
        if(sum%2==0){
            cout << sum << endl;
        }
        else{
            cout << sum-miin << endl;
        }
    }
    return 0;
}