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#include <iostream>

using namespace std;


int main()
{
    int bils;
    cin >> bils;
    int tab;

    int sum=0;
    int smallNP=1000000000;

    for(int i=0;i<bils;i++)
    {
        cin >> tab;
        if(tab%2)
        {
            if(smallNP>tab) smallNP=tab;
        }
        sum+=tab;
    }
    if(sum%2) sum-=smallNP;

    if(sum>0)cout << sum << endl;
    else cout << "NIESTETY" << endl;
    return 0;
}