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#include <iostream>
using namespace std;

int main()
{
    int n, a, sum = 0, lowest_odd = 1000;
    cin >> n;
    for(int i=0;i<n;i++)
    {
        cin >> a;
        sum += a;
        if(a % 2 == 1 && lowest_odd > a)
            lowest_odd = a;
    }
    if(sum % 2 == 0)
        cout << sum << '\n';
    else
        if(sum - lowest_odd == 0)
            cout << "NIESTETY\n";
        else
            cout << sum - lowest_odd << '\n';
    return 0;
}