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#include <iostream>
#include <vector>
using namespace std;



int main()
{
    ios::sync_with_stdio(0);

    int n;
    cin >> n;

    int suma = 0;
    int min_odd = 1000;


    vector<int> a(n);
    for(int i=0; i<n; ++i)
    {
        cin >> a[i];
        suma += a[i];
        if(a[i]%2 && a[i]<min_odd)
            min_odd = a[i];
    }

    if(suma%2==0)
        cout << suma << endl;
    else if(n==1)
        cout << "NIESTETY" << endl;
    else
        cout << suma - min_odd << endl;

}