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#include <iostream>


using namespace std;

int main()
{
    int n;
    cin >> n;
    long int suma = 0;
    int b;
    int minimal = 100000;
    for(int i = 0; i < n; ++i)
    {
        cin >> b;
        suma += b;
        if( b < minimal  && b%2 != 0) minimal = b;

    }
    //cout << minimal << endl;
    if( suma%2 == 0 ) cout << suma << endl;
    else
    {
        if((suma - minimal) != 0)
        cout << suma - minimal;
        else
        cout << "NIESTETY" << endl;
    }
    return 0;
}